feat: audit DeepSeek Chat across sources
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# DeepSeek-V2-Lite-Chat 跨来源采样审计
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> 执行日期:2026-07-30
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>
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> 协议:`llm-atlas-deepseek-chat-cross-source-sampling-v1`
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>
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> 模型:`deepseek-ai/DeepSeek-V2-Lite-Chat`
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>
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> revision:`85864749cd611b4353ce1decdb286193298f64c7`
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>
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> 预注册:`research/DEEPSEEK_V2_LITE_CHAT_CROSS_SOURCE_SAMPLING_PROTOCOL.md`
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>
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> 前序:Round 06 单来源 × 八 seed × 八条件采样
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## 0. 一句话结论
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本轮保持 256 条正式生成的总预算不变,把网格从 Round 06 的:
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```text
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4 sources × 8 seeds × 8 conditions
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```
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改成:
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```text
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16 sources × 4 seeds × 4 conditions
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```
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结果为:
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```text
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256 sampled outputs
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├─ 250 natural EOS
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├─ 6 budget truncated
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├─ 247 个不同的完整 token trajectory hashes
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├─ Math:47 / 64 strict exact
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├─ Code:52 / 64 official tests pass
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├─ R0 / R1:63 / 64 同 source-condition 轨迹分叉
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└─ 新进程 R0:64 / 64 格的八项合同字段 exact
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```
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最重要的不是总正确数下降,而是总数背后的题目异质性终于可见:
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```text
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Math tasks:14 / 16 · 16 / 16 · 8 / 16 · 9 / 16
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Code tasks:16 / 16 · 8 / 16 · 12 / 16 · 16 / 16
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```
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Round 06 的 Math `62 / 64` 与 Code `63 / 64` 各来自同一道题的重复采样,不能代表
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64 道独立任务。本轮也仍不是完整 benchmark;它只把覆盖单位从每域 1 条扩大到每域
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4 条,并第一次允许我们描述这 4 条 source 之间的离散性。
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---
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## 1. 这轮修复的统计对象错误
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### 1.1 seed 是题内重复,不是新题
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对固定 Math source 抽 64 个 seed,能够回答:
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- 同一道题的有限采样轨迹怎样分叉;
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- 这道题的任务结果是否对 seed 敏感;
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- 固定 seed 与执行环境时能否复跑出同一轨迹。
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它不能回答:
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- 模型在 64 道不同 Math 题上的能力;
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- source 换成另一题后,条件方向是否保留;
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- 这道题是否容易、典型或能代表 GSM8K;
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- 一个由 seed 数制造的窄区间是否具有 benchmark 意义。
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本轮因此冻结:
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```text
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主要覆盖单位:source
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source 内重复:seed
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```
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所有方向先在每条 source 内,由四个 seed 的 cell summary 计算;然后只描述四条
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source 的正、零、负方向数量。没有把题内 seed 当作独立 source。
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### 1.2 为什么仍保留 micro total
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`47 / 64` 与 `52 / 64` 仍有用,因为它们精确描述这份固定网格中通过的输出数。但它们
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必须与逐题矩阵一起展示:
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```text
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micro total
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≠ 题目难度分布
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≠ benchmark accuracy
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≠ population estimate
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```
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### 1.3 本轮不是盲确认
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`period` 是在看到 Round 06 结果后选出的定向 follow-up:上一轮句点格在单来源上出现
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明显的长度收缩与轨迹集合变化。因此:
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- 本轮可以检查前序方向在新增 source 上是否保留;
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- 不能称为完全独立、未见结果的 confirmatory experiment;
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- 不能从 `11 / 16` 同向构造事后显著性故事。
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---
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## 2. 冻结执行合同
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### 2.1 模型与软件
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| 对象 | 冻结值 |
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|---|---|
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| checkpoint | `deepseek-ai/DeepSeek-V2-Lite-Chat` |
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| revision | `85864749cd611b4353ce1decdb286193298f64c7` |
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| dtype | BF16 |
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| attention | eager |
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| PyTorch | `2.11.0+cu128` |
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| Transformers | `4.41.2` |
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| CUDA placement | embedding + layers 0–23 |
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| CPU placement | layers 24–26 + final norm + `lm_head` |
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| padding | left padding;`PAD=EOS`;padding mask 为 0 |
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| cache | `use_cache=true` |
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CPU offload 是本机执行拓扑,不是模型结构或能力属性。
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### 2.2 解码参数
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固定 revision 的官方 `generation_config.json` 给出:
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```text
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do_sample = true
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temperature = 0.3
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top_p = 0.95
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```
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正式执行显式传入:
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```text
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do_sample = true
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temperature = 0.3
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top_p = 0.95
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top_k = 0
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max_new_tokens = 512
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use_cache = true
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```
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`top_k=0` 用于关闭 Transformers 通用默认 top-k,不是额外的 checkpoint 作者结论。
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### 2.3 四格条件
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```text
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s0_eos
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s1_eos
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s0_period
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s1_period
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```
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- `s0/s1`:system off/on;
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- `eos`:官方 assistant 历史边界;
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- `period`:把该位置的 EOS 单 ID 替换为普通句点 ID 13。
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句点格是单 ID 反事实,不是官方有效聊天序列。每个 source × replicate 的四格放在同一个
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batch,行顺序固定。
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### 2.4 四个 seed
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| replicate | base seed |
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|---:|---:|
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| R0 | 2,101,325,316 |
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| R1 | 2,511,573,438 |
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| R2 | 1,677,220,094 |
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| R3 | 2,412,346,607 |
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base seed 在结果之前由协议字符串的 SHA-256 派生。每条 source 再从 base seed 与
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source ID 派生 run seed。四行共享 batch seed 与随机调用时序,但各行消费不同 RNG
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子流,因此仍是:
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```text
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batch-seed aligned
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≠ common-random-number paired
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```
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本轮不报告 paired p-value。
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---
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## 3. source 选择与输入身份
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source 不是按 Round 06 的正确率、完成率或文本质量挑选,而是来自已经冻结的公开语料
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选择合同:
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```text
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sample salt = llm-atlas-deepseek-routing-template-control-v1
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每域按 SHA-256 selection_rank 排序,取 within_domain_index 0–3
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```
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### 3.1 四域各四条
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| domain | index 0 | index 1 | index 2 | index 3 |
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|---|---|---|---|---|
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| English | WikiText `0443` | `0030` | `2909` | `2746` |
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| Chinese | TNEWS `4855` | `8935` | `3448` | `1059` |
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| Code | HumanEval `31` | `44` | `133` | `23` |
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| Math | GSM8K `1069` | `1228` | `0144` | `1251` |
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### 3.2 prompt hash 闸门
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本轮的:
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```text
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16 sources × 4 conditions = 64 prompt cells
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```
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与 Round 05 已执行的对应输入逐格比较:
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```text
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64 / 64 prompt token SHA-256 exact
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```
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HumanEval canonical solution/tests 与 GSM8K gold 只在生成冻结后进入独立 evaluator,
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从未进入模型 prompt。
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---
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## 4. smoke 与正式执行
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### 4.1 16-token smoke
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```text
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16 sources × R0/R1 × 4 conditions = 128 short outputs
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16 sources × R0 replay × 4 conditions = 64 replay outputs
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```
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| 闸门 | 结果 |
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|---|---:|
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| prompt hash exact | 64 / 64 |
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| R0 同进程重放全合同 exact | 64 / 64 |
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| R0/R1 可比格 | 64 |
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| R0/R1 trajectory 分叉 | 34 / 64 |
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| OOM / NaN / exception | 0 |
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16-token smoke 只检查执行合同,没有进入正式统计。
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### 4.2 正式网格
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```text
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16 sources
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× 4 seeds
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× 4 conditions
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× 512 new-token cap
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= 256 sampled outputs
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```
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| 检查 | 结果 |
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|---|---:|
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| sources | 16 |
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| sources / domain | 4 |
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| conditions / source | 4 |
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| seeds / source-condition | 4 |
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| total outputs | 256 |
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| missing / duplicate cells | 0 |
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| prompt hash exact | 64 / 64 |
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执行记录:
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| 指标 | 值 |
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|---|---:|
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| generation seconds | `3,520.086` |
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| peak CUDA allocated | `29,694,417,408 bytes` |
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| unique full trajectory hashes | `247 / 256` |
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| R0/R1 trajectory different | `63 / 64` |
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这里的耗时属于 CPU-offloaded eager 机制审计,不是服务吞吐 benchmark。
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---
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## 5. stopping 与轨迹总账
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| 指标 | 结果 |
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|---|---:|
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| natural EOS | 250 / 256 |
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| budget truncated | 6 / 256 |
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| unique full token trajectory hashes | 247 / 256 |
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| R0/R1 comparable cells | 64 |
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| R0/R1 different trajectories | 63 |
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`247 unique` 只说明完整 token ID 序列的 SHA-256 不同,不说明存在 247 种语义、策略或
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推理方法。
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高 EOS 率也不等于高正确率:
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```text
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Math 的 17 条失败全部 natural EOS
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Code 有自然 EOS 的 runtime / assertion failure
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```
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因此仍按四张账处理:
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```text
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stopping
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→ task terminal
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→ evaluator coverage
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→ correctness
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```
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---
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## 6. Math:47 / 64 怎样分布
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独立 evaluator 使用 GSM8K 官方 gold,抽取最终数值;严格成功要求:
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```text
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自然完成
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+ evaluator covered
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+ predicted numeric answer == gold numeric answer
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```
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### 6.1 4 tasks × 4 conditions
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| source | S0·EOS | S1·EOS | S0·句点 | S1·句点 | total |
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|---|---:|---:|---:|---:|---:|
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| GSM8K/1069 | 3/4 | 4/4 | 3/4 | 4/4 | 14/16 |
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| GSM8K/1228 | 4/4 | 4/4 | 4/4 | 4/4 | 16/16 |
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| GSM8K/0144 | 2/4 | 2/4 | 3/4 | 1/4 | 8/16 |
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| GSM8K/1251 | 1/4 | 4/4 | 1/4 | 3/4 | 9/16 |
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总计:
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```text
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47 / 64 strict exact
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```
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### 6.2 这张矩阵教会什么
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同样是预先冻结的 GSM8K source:
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- `/1228` 在 16 次生成中全对;
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- `/0144` 只有 8 / 16;
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- `/1251` 只有 9 / 16;
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- `/1069` 的 14 / 16 更接近 Round 06 单题高正确率。
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所以 Round 06 的 `62 / 64` 首先是 `/1069` 这一道题的局部性质,不能推广成模型的
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GSM8K 采样正确率。
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### 6.3 source-blocked task contrast
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system main effect 的四条 source 方向:
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```text
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2 positive · 1 zero · 1 negative
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```
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句点减 EOS 的 main effect:
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```text
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0 positive · 3 zero · 1 negative
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```
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interaction:
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```text
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0 positive · 2 zero · 2 negative
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```
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这些是固定四题的描述量,不是总体效应。
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### 6.4 失败身份
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Math 有 17 条 strict failure:
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- `/1069`:2;
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- `/0144`:8;
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- `/1251`:7;
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- `/1228`:0。
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17 条全部自然 EOS,全部为 evaluator 已覆盖但最终数值与 gold 不同。失败不是正则抽取器
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无法找到答案,也不是长度上限截断。
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---
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## 7. Code:52 / 64 怎样分布
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生成完成后,独立 evaluator:
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1. 抽取 Python candidate;
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2. 做 AST parse;
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3. 在固定容器中执行 HumanEval official tests;
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4. 记录 passed、runtime error、assertion failed;
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5. 以 candidate/test/harness hashes 做安全缓存。
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### 7.1 沙箱合同
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| 对象 | 值 |
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|---|---|
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| image | `python:3.11-alpine@sha256:25976e9d…7702a4` |
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| network | none |
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| filesystem | read-only |
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| user | `65534:65534` |
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| capabilities | all dropped |
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| no new privileges | true |
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| memory / swap | 256 MiB / 256 MiB |
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| pids | 64 |
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| cpus | 0.5 |
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| timeout | 5 seconds |
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| unique code cache entries | 47 |
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| cache hits | 17 |
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64 / 64 candidates 完成 AST 检查与执行身份记录。
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### 7.2 4 tasks × 4 conditions
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| source | S0·EOS | S1·EOS | S0·句点 | S1·句点 | total |
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|---|---:|---:|---:|---:|---:|
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| HumanEval/31 | 4/4 | 4/4 | 4/4 | 4/4 | 16/16 |
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| HumanEval/44 | 2/4 | 1/4 | 1/4 | 4/4 | 8/16 |
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| HumanEval/133 | 4/4 | 4/4 | 4/4 | 0/4 | 12/16 |
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| HumanEval/23 | 4/4 | 4/4 | 4/4 | 4/4 | 16/16 |
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总计:
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```text
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52 / 64 official tests pass
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```
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### 7.3 总 interaction 为 0,却不代表每题为 0
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Code strict success 的 source-level interaction:
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| source | interaction |
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|---|---:|
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| HumanEval/31 | 0 |
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| HumanEval/44 | +1.0 |
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| HumanEval/133 | −1.0 |
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| HumanEval/23 | 0 |
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| domain mean | 0 |
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这是本轮最清楚的聚合陷阱:
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```text
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domain mean = 0
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```
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不是“每道题都没有 interaction”,而是 `/44` 与 `/133` 正负完全抵消。
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### 7.4 失败身份
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12 条 Code strict failure:
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```text
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HumanEval/44
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├─ 5 runtime_error
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└─ 3 assertion_failed
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HumanEval/133
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└─ 4 assertion_failed(全部 s1_period)
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```
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其中只有 1 条属于 budget-truncated unresolved;其余失败不能归因于 512-token 上限。
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AST 合法、自然 EOS 或说明流畅都不能替代 official tests。
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---
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## 8. 句点是否普遍缩短生成
|
||||
|
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每条 source 内先计算:
|
||||
|
||||
```text
|
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period main
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= mean(S0·period, S1·period)
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− mean(S0·EOS, S1·EOS)
|
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```
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|
||||
负数表示句点格更短。
|
||||
|
||||
### 8.1 四域方向
|
||||
|
||||
| domain | shorter sources | domain mean | source median |
|
||||
|---|---:|---:|---:|
|
||||
| English | 1 / 4 | −8.5 | +21.2 |
|
||||
| Chinese | 3 / 4 | −13.9 | −13.0 |
|
||||
| Code | 4 / 4 | −130.0 | −166.1 |
|
||||
| Math | 3 / 4 | −19.8 | −9.6 |
|
||||
| total | 11 / 16 | — | — |
|
||||
|
||||
### 8.2 English 直接修正 Round 06 的单来源印象
|
||||
|
||||
| source | period − EOS mean tokens |
|
||||
|---|---:|
|
||||
| WikiText/0443 | −121.0 |
|
||||
| WikiText/0030 | +44.5 |
|
||||
| WikiText/2909 | +41.0 |
|
||||
| WikiText/2746 | +1.375 |
|
||||
|
||||
如果只看 Round 06 的 `/0443`,会写成:
|
||||
|
||||
```text
|
||||
句点大幅缩短 English 输出
|
||||
```
|
||||
|
||||
加入三条预先冻结的 English source 后:
|
||||
|
||||
```text
|
||||
1 条更短
|
||||
3 条更长
|
||||
domain mean 仍是 −8.5
|
||||
source median 却是 +21.2
|
||||
```
|
||||
|
||||
均值与多数方向相反,是因为 `/0443` 的 `−121` 足以压过另外三条正值。这正是为什么
|
||||
本轮在前端同时展示四个 source 点、均值和中位数。
|
||||
|
||||
### 8.3 其余三域
|
||||
|
||||
Chinese:
|
||||
|
||||
```text
|
||||
+0.375 · −30.0 · −7.5 · −18.5
|
||||
```
|
||||
|
||||
Code:
|
||||
|
||||
```text
|
||||
−178.625 · −164.375 · −167.875 · −9.0
|
||||
```
|
||||
|
||||
Math:
|
||||
|
||||
```text
|
||||
−4.625 · −68.75 · +8.875 · −14.5
|
||||
```
|
||||
|
||||
Code 的四条 source 同向,是当前固定网格里最一致的长度模式;仍不能写成对
|
||||
HumanEval 总体或所有代码任务的普遍规律。
|
||||
|
||||
---
|
||||
|
||||
## 9. system main effect 也依赖 source
|
||||
|
||||
平均生成长度的 system main effect:
|
||||
|
||||
| domain | negative | zero | positive | mean |
|
||||
|---|---:|---:|---:|---:|
|
||||
| English | 4 | 0 | 0 | −137.0 |
|
||||
| Chinese | 2 | 0 | 2 | −6.9 |
|
||||
| Code | 4 | 0 | 0 | −143.3 |
|
||||
| Math | 3 | 0 | 1 | −13.6 |
|
||||
|
||||
English 与 Code 在这四条 source 上都呈 system-on 更短;Chinese 则正负各半。不能把
|
||||
一个域的方向复制到另一个域。
|
||||
|
||||
自然 EOS 已接近天花板:
|
||||
|
||||
- system-on 提升 EOS 的 source:English 2 / 4;
|
||||
- Chinese、Code、Math:均 0 / 4;
|
||||
- 这主要说明多数 cell 已经 4 / 4 EOS,不是 system 没有其它行为差异。
|
||||
|
||||
---
|
||||
|
||||
## 10. source 间与 source 内离散
|
||||
|
||||
每个 domain-condition 同时保存:
|
||||
|
||||
```text
|
||||
within-source seed length range
|
||||
between-source mean length range
|
||||
within-source seed success range
|
||||
between-source success-rate range
|
||||
```
|
||||
|
||||
这些量回答不同问题:
|
||||
|
||||
- within-source:固定一道题,四个 seed 能让长度或成功怎样变化;
|
||||
- between-source:固定域与 condition,四道题的均值或成功率跨度多大。
|
||||
|
||||
它们没有被压成一个“哪种随机性更大”的全局数字,因为:
|
||||
|
||||
- length 与 correctness 量纲不同;
|
||||
- 四条 source 太少,不适合稳定估计方差分量;
|
||||
- seed 并不是逐行 common random numbers;
|
||||
- source 不是从总体随机抽样。
|
||||
|
||||
前端允许逐域逐 condition 检查两个范围,但不输出伪精确的总体方差比例。
|
||||
|
||||
---
|
||||
|
||||
## 11. 独立新进程复跑
|
||||
|
||||
正式生成后,全新进程只重跑:
|
||||
|
||||
```text
|
||||
16 sources × R0 × 4 conditions = 64 outputs
|
||||
```
|
||||
|
||||
逐格比较八项预注册字段:
|
||||
|
||||
| 字段 | exact |
|
||||
|---|---:|
|
||||
| run seed | 64 / 64 |
|
||||
| prompt hash | 64 / 64 |
|
||||
| complete generated token IDs | 64 / 64 |
|
||||
| decoded text | 64 / 64 |
|
||||
| EOS state | 64 / 64 |
|
||||
| truncation state | 64 / 64 |
|
||||
| CPU RNG pre-state hash | 64 / 64 |
|
||||
| CUDA RNG pre-state hash | 64 / 64 |
|
||||
|
||||
因此这份固定合同同时满足:
|
||||
|
||||
```text
|
||||
不同 seed:63 / 64 同格轨迹分叉
|
||||
相同合同:64 / 64 新进程轨迹 exact
|
||||
```
|
||||
|
||||
“采样会变化”和“采样可复现”并不矛盾。
|
||||
|
||||
exact replay 不承诺跨 PyTorch、Transformers、CUDA kernel、硬件或 batch 合同复现。
|
||||
|
||||
---
|
||||
|
||||
## 12. 工件与 hash chain
|
||||
|
||||
| 工件 | bytes | SHA-256 |
|
||||
|---|---:|---|
|
||||
| formal sampling | 1,980,601 | `f013132485f27adce008f03f781bed9982efc0d7939f13faede01c9f6f3d7f7c` |
|
||||
| independent evaluation | 370,580 | `e88b274599fc5951561f9e5e7438fb4d6d25f341ae3bc4a2c4121877a0db8975` |
|
||||
| fresh-process R0 rerun | 597,066 | `143dc9d0f7c914db4781e36b1401cdc9fbc2971a0dca71188bab0f8cedb002a6` |
|
||||
| reproduction comparison | 30,037 | `ec4a47894953f5d73bb62211b588632ef7032da0e915218992b7fc3ef9c2a556` |
|
||||
| source-blocked analysis | 168,001 | `d0dece388998fee419d34ff33f140695a9fedef6e79799cdf42eb283b047bc84` |
|
||||
|
||||
前端压缩工件:
|
||||
|
||||
```text
|
||||
src/data/deepseek-v2-lite-chat-cross-source-sampling-compact.json
|
||||
SHA-256 d0ab65646c6119bdeafeb451103dc6afebff3624a1e05f13a45a52ad965be1af
|
||||
```
|
||||
|
||||
builder 在生成前端数据之前验证:
|
||||
|
||||
1. evaluator 输入 hash 指向正式 sampling;
|
||||
2. reproduction 的 formal/rerun hashes 指向对应文件;
|
||||
3. analysis 的三项输入 hashes 全部一致;
|
||||
4. 64 格八项复现字段全部 exact;
|
||||
5. `16 × 4 × 4 = 256` 网格合同成立。
|
||||
|
||||
---
|
||||
|
||||
## 13. 一手来源与实现身份
|
||||
|
||||
### 13.1 官方 checkpoint 配置
|
||||
|
||||
- DeepSeek-V2-Lite-Chat generation config:
|
||||
<https://huggingface.co/deepseek-ai/DeepSeek-V2-Lite-Chat/blob/main/generation_config.json>
|
||||
|
||||
这里只把固定 revision 文件中的 `.3/.95` 记为作者发布配置;`top_k=0` 是本实验为关闭
|
||||
Transformers 通用 top-k 而显式加入的执行参数。
|
||||
|
||||
### 13.2 nucleus sampling
|
||||
|
||||
- Holtzman et al., *The Curious Case of Neural Text Degeneration*:
|
||||
<https://arxiv.org/abs/1904.09751>
|
||||
|
||||
本轮使用 nucleus sampling 的有限样本,不声称恢复完整生成分布。
|
||||
|
||||
### 13.3 任务来源
|
||||
|
||||
- Chen et al., *Evaluating Large Language Models Trained on Code*:
|
||||
<https://arxiv.org/abs/2107.03374>
|
||||
- Cobbe et al., *Training Verifiers to Solve Math Word Problems*:
|
||||
<https://arxiv.org/abs/2110.14168>
|
||||
|
||||
HumanEval official tests 与 GSM8K gold 只服务于本轮固定四题的独立评测,不生成
|
||||
benchmark 总体分数。
|
||||
|
||||
---
|
||||
|
||||
## 14. 可以说与不能说
|
||||
|
||||
### 可以说
|
||||
|
||||
- 在固定 16 条 source 的网格中,250 / 256 条生成自然 EOS;
|
||||
- 247 / 256 条完整 token trajectories 唯一;
|
||||
- R0/R1 在 63 / 64 同 source-condition cells 分叉;
|
||||
- 新进程 R0 在 64 / 64 格、八项预注册字段 exact;
|
||||
- 四道 Math 的 strict pass 从 8 / 16 到 16 / 16;
|
||||
- 四道 Code 的 tests pass 从 8 / 16 到 16 / 16;
|
||||
- 句点在 11 / 16 条 source 上缩短平均生成长度;
|
||||
- English 的域均值与多数 source 方向相反;
|
||||
- Code 的 task interaction 域均值为 0,但两条非零 source 正负抵消。
|
||||
|
||||
### 不能说
|
||||
|
||||
- DeepSeek-V2-Lite-Chat 的 GSM8K 准确率是 47 / 64;
|
||||
- DeepSeek-V2-Lite-Chat 的 HumanEval pass@1 是 52 / 64;
|
||||
- 16 条 source 随机代表四个数据集总体;
|
||||
- 4 个 seed 是 4 道独立题;
|
||||
- 11 / 16 构成总体显著性;
|
||||
- period 是官方有效聊天边界;
|
||||
- period 普遍缩短所有 English、Math 或中文输出;
|
||||
- domain mean 为 0 说明每条 source 都没有效应;
|
||||
- natural EOS、AST parse 或可执行等同于正确;
|
||||
- exact replay 会跨软件、硬件和 batch 合同自动成立。
|
||||
|
||||
---
|
||||
|
||||
## 15. 下一步
|
||||
|
||||
本轮修复了“单题多 seed 冒充多题覆盖”,但仍只有每域 4 条 source。下一轮优先级应是:
|
||||
|
||||
1. 把任务覆盖扩大到足以报告 task-level bootstrap,并在结果前冻结抽样框;
|
||||
2. 为每条 source 使用独立 per-row RNG stream,构造真正可解释的 common-random-number
|
||||
条件对;
|
||||
3. 分离 ordinary boundary token 的词法身份、频率与位置作用,不只复查句点;
|
||||
4. 对 HumanEval/44 与 /133 的相反 interaction 做预注册 failure taxonomy;
|
||||
5. 在足够 source 覆盖后,再决定是否值得进行干预式 mediation;
|
||||
6. 继续保持生成、evaluator、统计分析与 reproduction 四套工件分离。
|
||||
|
||||
本轮已经回答的是:
|
||||
|
||||
```text
|
||||
同样的 sampling 配方与输入干预,换一条 source 后,方向会不会变?
|
||||
```
|
||||
|
||||
答案是:
|
||||
|
||||
```text
|
||||
会,而且聚合均值有时会与多数 source 方向相反。
|
||||
```
|
||||
@@ -0,0 +1,454 @@
|
||||
# DeepSeek-V2-Lite-Chat 跨来源采样协议
|
||||
|
||||
> 状态:已按预注册协议执行;正式结果见
|
||||
> `research/DEEPSEEK_V2_LITE_CHAT_CROSS_SOURCE_SAMPLING_AUDIT.md`
|
||||
>
|
||||
> 注册日期:2026-07-30
|
||||
>
|
||||
> 协议 ID:`llm-atlas-deepseek-chat-cross-source-sampling-v1`
|
||||
>
|
||||
> 模型:`deepseek-ai/DeepSeek-V2-Lite-Chat`
|
||||
>
|
||||
> revision:`85864749cd611b4353ce1decdb286193298f64c7`
|
||||
>
|
||||
> 前序实验:Round 06 单来源 × 八 seed × 八条件采样
|
||||
|
||||
## 0. 这一轮补什么,不补什么
|
||||
|
||||
Round 06 固定四条 source,每条 source 在八个 seed 和八种边界条件下生成:
|
||||
|
||||
```text
|
||||
4 sources × 8 seeds × 8 conditions = 256 outputs
|
||||
```
|
||||
|
||||
它证明了两件看似矛盾但可以同时成立的事:
|
||||
|
||||
1. 不同 seed 会让同一格的 sampled trajectory 分叉;
|
||||
2. 固定 checkpoint、输入、batch 行顺序、软件与 seed 后,同一 trajectory 可以跨进程逐
|
||||
token 复现。
|
||||
|
||||
但 Math 和 Code 各只有一道题。即使那一道题有 64 个 sampled outputs,也仍然只有一个
|
||||
任务对象。把 64 个 seed 重复当成 64 道独立 benchmark 题,会制造伪样本量。
|
||||
|
||||
Round 07 因此把预算从“同题更多 seed”移动到“更多预先选定的 source”:
|
||||
|
||||
```text
|
||||
16 sources × 4 seeds × 4 conditions = 256 outputs
|
||||
```
|
||||
|
||||
本轮第一次允许描述固定 4 道 Math / 4 道 Code 之间的离散性,但仍不是完整
|
||||
GSM8K/HumanEval benchmark,更不是模型总体能力估计。
|
||||
|
||||
---
|
||||
|
||||
## 1. 研究问题与证据层级
|
||||
|
||||
### 1.1 主要问题
|
||||
|
||||
在固定 source selection、官方 sampling 参数与四行 batch 合同下:
|
||||
|
||||
1. Round 06 观察到的 completion-length / EOS 模式能否在另外三条同域 source 上出现?
|
||||
2. Math / Code 的 pass count 是否由单一道题主导?
|
||||
3. `system off/on × EOS/period` 四格的方向是否跨 source 一致,还是明显依赖题目?
|
||||
4. source 间差异与 source 内 seed 差异,哪一个在当前固定网格中更大?
|
||||
|
||||
### 1.2 探索与确认的边界
|
||||
|
||||
选择 `period` 作为唯一 ordinary-token 对照,受 Round 06 的结果启发:它在单来源运行中
|
||||
显示了明显的输出长度与 exact-trajectory 收缩。因此本轮是**定向复查**,不是完全独立、
|
||||
未见前序结果的 confirmatory experiment。
|
||||
|
||||
本轮不会:
|
||||
|
||||
- 把 Round 06 与 Round 07 合并后计算“独立复现率”;
|
||||
- 把四道题的方向一致写成总体显著性;
|
||||
- 根据本轮结果继续替换 source、condition 或 seed;
|
||||
- 把 period 序列称为官方有效聊天格式;
|
||||
- 把题内四个 seed 当成四道独立题。
|
||||
|
||||
---
|
||||
|
||||
## 2. 模型、依赖与解码合同
|
||||
|
||||
继承冻结对象:
|
||||
|
||||
- 官方 SFT Chat checkpoint;
|
||||
- revision `85864749cd611b4353ce1decdb286193298f64c7`;
|
||||
- checkpoint 12 个文件及各自 SHA-256;
|
||||
- Transformers `4.41.2`;
|
||||
- PyTorch `2.11.0+cu128`;
|
||||
- BF16、官方 remote modeling code、eager attention;
|
||||
- CUDA resident:embedding + layers 0–23;
|
||||
- CPU offload:layers 24–26 + final norm + `lm_head`;
|
||||
- `PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True`;
|
||||
- GPU static placement `28GiB`、CPU placement `80GiB`;
|
||||
- 左填充,`PAD=EOS`,padding mask 为 0;
|
||||
- `use_cache=true`、统一 `max_new_tokens=512`。
|
||||
|
||||
固定 revision 的官方 `generation_config.json` 给出:
|
||||
|
||||
```text
|
||||
do_sample = true
|
||||
temperature = 0.3
|
||||
top_p = 0.95
|
||||
bos_id = 100000
|
||||
eos_id = 100001
|
||||
```
|
||||
|
||||
正式执行显式传入:
|
||||
|
||||
```text
|
||||
do_sample = true
|
||||
temperature = 0.3
|
||||
top_p = 0.95
|
||||
top_k = 0
|
||||
max_new_tokens = 512
|
||||
use_cache = true
|
||||
```
|
||||
|
||||
`top_k=0` 用于关闭 Transformers 通用默认 top-k;它不是 checkpoint 文件中的额外作者
|
||||
结论。
|
||||
|
||||
---
|
||||
|
||||
## 3. source 如何在结果之前冻结
|
||||
|
||||
source 不按 Round 06 的正确率、完成率或文本质量挑选。它们取自已冻结的
|
||||
`deepseek-v2-lite-routing-special-token-family-control.json`:
|
||||
|
||||
```text
|
||||
sample salt = llm-atlas-deepseek-routing-template-control-v1
|
||||
每域按 SHA-256 selection_rank 排序,取 within_domain_index 0–3
|
||||
```
|
||||
|
||||
### 3.1 English
|
||||
|
||||
| index | source ID |
|
||||
|---:|---|
|
||||
| 0 | `wikitext2/raw-validation/0443` |
|
||||
| 1 | `wikitext2/raw-validation/0030` |
|
||||
| 2 | `wikitext2/raw-validation/2909` |
|
||||
| 3 | `wikitext2/raw-validation/2746` |
|
||||
|
||||
### 3.2 Chinese
|
||||
|
||||
| index | source ID |
|
||||
|---:|---|
|
||||
| 0 | `tnews/test/4855` |
|
||||
| 1 | `tnews/test/8935` |
|
||||
| 2 | `tnews/test/3448` |
|
||||
| 3 | `tnews/test/1059` |
|
||||
|
||||
### 3.3 Code
|
||||
|
||||
| index | source ID |
|
||||
|---:|---|
|
||||
| 0 | `HumanEval/31` |
|
||||
| 1 | `HumanEval/44` |
|
||||
| 2 | `HumanEval/133` |
|
||||
| 3 | `HumanEval/23` |
|
||||
|
||||
### 3.4 Math
|
||||
|
||||
| index | source ID |
|
||||
|---:|---|
|
||||
| 0 | `gsm8k/test/1069` |
|
||||
| 1 | `gsm8k/test/1228` |
|
||||
| 2 | `gsm8k/test/0144` |
|
||||
| 3 | `gsm8k/test/1251` |
|
||||
|
||||
这些正是 Round 05 greedy completion 已执行的 16 条 source。本轮在加载模型前,必须验证
|
||||
16 × 4 = 64 个 prompt token hashes 与 Round 05 对应格逐格 exact。
|
||||
|
||||
---
|
||||
|
||||
## 4. 四格因子与 batch 合同
|
||||
|
||||
固定四格:
|
||||
|
||||
```text
|
||||
s0_eos, s1_eos, s0_period, s1_period
|
||||
```
|
||||
|
||||
其中:
|
||||
|
||||
- `s0/s1`:system off/on;
|
||||
- `eos`:官方 assistant 历史边界;
|
||||
- `period`:把该位置的 EOS 单 ID 替换为普通句点 ID 13;
|
||||
- system 文本、one-shot 内容、target source、角色词头、目标位置与 prompt 其余 token 均继承
|
||||
前序协议。
|
||||
|
||||
每个 source × replicate 的四格在同一个 batch,行顺序永久固定。四行 batch 与 Round 06
|
||||
的八行 batch 不同,因此即使复用相同 base seed,也不应期待 trajectory exact;本轮使用
|
||||
新协议派生的新 seed,避免把两种 batch 合同伪装成直接重复。
|
||||
|
||||
Transformers `4.41.2` 对整个 batch 调用一次 `torch.multinomial`,不接受逐行
|
||||
`Generator`。四格只共享 batch seed 与调用时序,每行消费不同 RNG 子流,因此仍是:
|
||||
|
||||
```text
|
||||
batch-seed aligned
|
||||
≠ common-random-number paired
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## 5. seed 冻结
|
||||
|
||||
四个 base seed 由以下字符串做 SHA-256,取前 4 bytes big-endian unsigned integer:
|
||||
|
||||
```text
|
||||
llm-atlas-deepseek-chat-cross-source-sampling-v1/seed/{index}
|
||||
```
|
||||
|
||||
固定结果:
|
||||
|
||||
| replicate | base seed |
|
||||
|---:|---:|
|
||||
| R0 | 2,101,325,316 |
|
||||
| R1 | 2,511,573,438 |
|
||||
| R2 | 1,677,220,094 |
|
||||
| R3 | 2,412,346,607 |
|
||||
|
||||
实际 run seed:
|
||||
|
||||
```text
|
||||
SHA256(
|
||||
protocol_id + "/run\0"
|
||||
+ decimal(base_seed)
|
||||
+ "\0"
|
||||
+ source_id
|
||||
)[0:8] big-endian
|
||||
modulo (2^63 - 1)
|
||||
```
|
||||
|
||||
每次 source × replicate batch 前:
|
||||
|
||||
```python
|
||||
torch.manual_seed(run_seed)
|
||||
torch.cuda.manual_seed_all(run_seed)
|
||||
```
|
||||
|
||||
同时记录 CPU / CUDA RNG state 的执行前后 SHA-256。
|
||||
|
||||
---
|
||||
|
||||
## 6. 输入文件身份
|
||||
|
||||
| 输入 | SHA-256 |
|
||||
|---|---|
|
||||
| source selection contract | `c372c1b03a8b15f615b54ded5d9257a8fc2cdb7728001735d3d4c1d8534af5bf` |
|
||||
| Round 05 greedy baseline | `6af40512c5868caab0ef58356aaa7728384f2b7acc7c502aa89478fdf5a2a468` |
|
||||
| HumanEval gzip | `b796127e635a67f93fb35c04f4cb03cf06f38c8072ee7cee8833d7bee06979ef` |
|
||||
| GSM8K test JSONL | `3730d312f6e3440559ace48831e51066acaca737f6eabec99bccb9e4b3c39d14` |
|
||||
| TNEWS test JSONL | `74f199325768fbf2d6020711edfff23d653e99e0f8ac31a126a54db29c3a0ca8` |
|
||||
| TNEWS archive | `77c476e70cfe0b014a81b84c6e1db2142a8a2f52f4ae0a8216aa75e673933462` |
|
||||
| WikiText-2 validation parquet | `204929b7ff9d6184953f867dedb860e40aa69c078fc1e54b3baaa8fb28511c4c` |
|
||||
|
||||
HumanEval `canonical_solution` / tests 与 GSM8K answer 只进入生成后的独立 evaluator,绝不
|
||||
进入模型 prompt。
|
||||
|
||||
---
|
||||
|
||||
## 7. 执行网格与闸门
|
||||
|
||||
### 7.1 16-token smoke
|
||||
|
||||
```text
|
||||
16 sources × R0/R1 × 4 conditions × 16 tokens = 128 short outputs
|
||||
16 sources × R0 replay × 4 conditions × 16 tokens = 64 replay outputs
|
||||
```
|
||||
|
||||
通过条件:
|
||||
|
||||
1. 64 / 64 prompt hashes 与 Round 05 exact;
|
||||
2. 128 条 smoke 无 OOM、NaN 或 exception;
|
||||
3. R0 同进程 replay 的 run seed、prompt hash、token IDs、text 与 stop state 64 / 64 exact;
|
||||
4. R0/R1 的 64 个同 source-condition cells 至少一格 trajectory 分叉;
|
||||
5. 正式参数确实是 `.3/.95/top-k 0`。
|
||||
|
||||
smoke 输出不进入正式统计。
|
||||
|
||||
### 7.2 正式网格
|
||||
|
||||
```text
|
||||
16 sources
|
||||
× 4 seeds
|
||||
× 4 conditions
|
||||
× 512 new-token cap
|
||||
= 256 sampled outputs
|
||||
```
|
||||
|
||||
source 顺序固定为 English → Chinese → Code → Math,各域按 `within_domain_index` 升序;
|
||||
replicate 固定 R0 → R3;每个 replicate 内行顺序固定为四格顺序。不能根据中间输出提前
|
||||
停止或只续写截断格。
|
||||
|
||||
### 7.3 新进程复跑
|
||||
|
||||
正式完成后重新启动 Python、重新加载模型,只复跑 R0:
|
||||
|
||||
```text
|
||||
16 sources × 1 seed × 4 conditions = 64 outputs
|
||||
```
|
||||
|
||||
逐格核对:
|
||||
|
||||
- run seed;
|
||||
- prompt token hash;
|
||||
- 完整 generated token IDs;
|
||||
- decoded text;
|
||||
- EOS state;
|
||||
- truncation state;
|
||||
- CPU RNG pre-state hash;
|
||||
- CUDA RNG pre-state hash。
|
||||
|
||||
只能写“64 / 64 R0 cells independently reproduced”,不能写 256 / 256。
|
||||
|
||||
---
|
||||
|
||||
## 8. 独立 evaluator
|
||||
|
||||
仍把四张账分开:
|
||||
|
||||
1. stopping:natural EOS / budget truncated;
|
||||
2. task terminal:明确答案、闭合 code fence 或 tests pass;
|
||||
3. evaluator coverage:数值可抽取,或代码 AST + sandbox 已执行;
|
||||
4. correctness:GSM8K strict numeric exact / HumanEval official tests pass。
|
||||
|
||||
HumanEval 每个独特 candidate 使用固定镜像:
|
||||
|
||||
```text
|
||||
python:3.11-alpine@
|
||||
sha256:25976e9d34a0fab1f278cae931f34c8303d97bf0c0d7f85b6b4dcf641d7702a4
|
||||
```
|
||||
|
||||
沙箱:
|
||||
|
||||
```text
|
||||
network none · read-only filesystem · user 65534:65534
|
||||
cap-drop ALL · no-new-privileges · no host mounts
|
||||
256 MiB memory/swap · pids 64 · cpus .5 · timeout 5s
|
||||
```
|
||||
|
||||
完全相同的 candidate + task + tests + harness 可以复用 execution cache,但保留每个生成格
|
||||
自己的 evaluator row。
|
||||
|
||||
---
|
||||
|
||||
## 9. 预注册统计
|
||||
|
||||
### 9.1 source × condition
|
||||
|
||||
每个集合有 4 个 seed,报告:
|
||||
|
||||
- natural EOS / 4;
|
||||
- truncated / 4;
|
||||
- generated length mean / min / max;
|
||||
- unique full-token trajectory hashes / 4;
|
||||
- 六对 seed pair 的 token similarity;
|
||||
- Math:4 个抽取答案、严格正确数、唯一绝对多数答案(若存在);
|
||||
- Code:AST、executed、official tests pass、observed any-pass。
|
||||
|
||||
`observed any-pass` 只表示当前四次抽样至少一次通过,不称为标准 HumanEval pass@4。
|
||||
|
||||
### 9.2 domain × condition
|
||||
|
||||
每个 domain 的四条 source 等权,报告:
|
||||
|
||||
- micro count:16 个 outputs 的合计;
|
||||
- source macro mean:先算每条 source 的四 seed 比例,再对四条 source 等权;
|
||||
- source range:四条 source 的最小/最大;
|
||||
- 4 × 4 source-condition 矩阵。
|
||||
|
||||
因为每条 source 的 seed 数相同,micro 与 macro 点估计可能数值相同;两者仍分开呈现,
|
||||
避免未来不等重复数时悄悄改变权重。
|
||||
|
||||
### 9.3 source-blocked 四格 contrast
|
||||
|
||||
对每条 source 先算四格 cell mean,再形成描述性 contrast:
|
||||
|
||||
```text
|
||||
system main =
|
||||
mean(s1_eos, s1_period) - mean(s0_eos, s0_period)
|
||||
|
||||
boundary main =
|
||||
mean(s0_period, s1_period) - mean(s0_eos, s1_eos)
|
||||
|
||||
interaction =
|
||||
(s1_period - s1_eos) - (s0_period - s0_eos)
|
||||
```
|
||||
|
||||
分别对:
|
||||
|
||||
- natural EOS rate;
|
||||
- generated-token length;
|
||||
- Math / Code fixed-budget success;
|
||||
- Math / Code strict-complete success。
|
||||
|
||||
每个 domain 展示四条 source 的 contrast dots、median、min、max 与正/零/负方向计数。不算
|
||||
p-value,不给总体置信区间。
|
||||
|
||||
### 9.4 两层离散性
|
||||
|
||||
对 generated-token length 与 task success:
|
||||
|
||||
- `within-source seed range`:同 source-condition 四 seed 的范围;
|
||||
- `between-source cell-mean range`:同 domain-condition 四条 source 均值的范围。
|
||||
|
||||
这只是固定网格中的描述,不作随机效应方差分解,也不把四条 source 当作领域总体随机样本。
|
||||
|
||||
### 9.5 前序方向复查
|
||||
|
||||
只针对 Round 06 已观察到的方向登记:
|
||||
|
||||
```text
|
||||
period 相对 EOS 是否缩短 mean generated tokens?
|
||||
system on 相对 off 是否提高 natural EOS rate?
|
||||
```
|
||||
|
||||
按 source 报告方向,不因结果改写为“改善质量”。Math / Code correctness 单独展示,不能由
|
||||
长度或 EOS 代替。
|
||||
|
||||
---
|
||||
|
||||
## 10. 失败与修订规则
|
||||
|
||||
- smoke 前可修实现错误;正式 source/seed/condition/metrics 不随输出改动;
|
||||
- 正式 JSON 完整写出前失败,整轮重新开始,不保留“表现较好”的部分 source;
|
||||
- OOM 优先降低 static GPU placement,并用同 seed smoke 做 placement exact 闸门;
|
||||
- 不拆四行 batch;拆 batch 或改行顺序意味着新协议;
|
||||
- evaluator bug 可以修复并重跑 evaluator,但 sampled output 文件冻结;
|
||||
- 新进程 R0 任一 preregistered 字段不 exact,则结果只作复现失败诊断;
|
||||
- 某题 evaluator uncovered 仍保留该格,不能删题或换题;
|
||||
- 沙箱超时、AST 失败、assertion failure 与 runtime error 分开记录。
|
||||
|
||||
---
|
||||
|
||||
## 11. 永久禁止的结论
|
||||
|
||||
- 4 道 GSM8K / HumanEval 代表完整 benchmark;
|
||||
- 64 个 task-domain outputs 等于 64 道独立题;
|
||||
- 4 seeds 足以估计完整生成分布;
|
||||
- observed any-pass 等于标准 pass@4;
|
||||
- period 是官方有效聊天边界;
|
||||
- system 或 period 让模型“更聪明”“更稳定”;
|
||||
- natural EOS、语义终点、可评测与正确是同一个指标;
|
||||
- 四条 source 的方向计数是总体显著性;
|
||||
- batch-seed aligned 是 common-random-number pair;
|
||||
- exact same-seed replay 可跨软件、kernel 或硬件保证;
|
||||
- CPU-offloaded eager 延迟等于生产服务吞吐;
|
||||
- 输出关联已经定位到 hidden-state / router mediation。
|
||||
|
||||
---
|
||||
|
||||
## 12. 一手来源
|
||||
|
||||
- DeepSeek-V2-Lite-Chat pinned `generation_config.json`:
|
||||
<https://huggingface.co/deepseek-ai/DeepSeek-V2-Lite-Chat/blob/85864749cd611b4353ce1decdb286193298f64c7/generation_config.json>
|
||||
- Holtzman et al., *The Curious Case of Neural Text Degeneration*:
|
||||
<https://arxiv.org/abs/1904.09751>
|
||||
- Chen et al., *Evaluating Large Language Models Trained on Code*:
|
||||
<https://arxiv.org/abs/2107.03374>
|
||||
- Cobbe et al., *Training Verifiers to Solve Math Word Problems*:
|
||||
<https://arxiv.org/abs/2110.14168>
|
||||
- OpenAI HumanEval pinned repository:
|
||||
<https://github.com/openai/human-eval/tree/6d43fb980f9fee3c892a914eda09951f772ad10d>
|
||||
Reference in New Issue
Block a user