Synthetic Persona Pretraining: Alignment from Token Zero
Paper • 2608.13482 • Published • 1
revision string | seed int64 | seq_len int64 | gbs int64 | A_annotated int64 | K_canary int64 | N_total_seqs int64 | F_frontload int64 | train_steps int64 | compact_seqs int64 | train_tokens int64 | annotated_seq_share float64 | frontload_seq_share float64 | weights dict | model dict | lr dict | annotated_stats dict | built_at timestamp[s] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ee8ce7103627f81cefdf48bccc8d157564632317 | 28 | 2,048 | 960 | 1,519,770 | 1,999 | 15,197,760 | 30,396 | 15,831 | 13,675,991 | 31,125,012,480 | 0.1 | 0.002 | {
"compact": 0.8998688622533847,
"annotated": 0.09999960520497758,
"canary": 0.00013153254163771503
} | {
"hidden": 1408,
"layers": 17,
"heads": 22,
"kv_groups": 11,
"ffn": 4864,
"params": 519815296,
"tokens_per_param": 59.87706156303642,
"target_params_3x_chinchilla": 518750208
} | {
"peak": 0.0002,
"warmup_iters": 2000,
"wsd_decay_iters": 2001,
"style": "WSD linear->0"
} | {
"A": 1519770,
"K": 1999,
"doc_trunc": 218161,
"degenerate_n": 0,
"ann_content_tokens": 1097864274,
"refl_tokens_1p": 187123176,
"mean_insert_frac": 0.49528342708649575,
"labeled_row_count_prefilter": 1521801
} | 2026-08-17T02:56:06 |
op-spp-streams-v1 — tokenized Megatron streams (SPP-format pretraining corpus)
Tokenized Dolma v1.7 (ODC-BY)
subsample in Megatron IndexedDataset format (uint16, SmolLM2 tokenizer +
<assistant> extension from epfl-dlab/spp-training):
compact dense-packed 2049-token windows; annotated/canary one document
per window, EOD-padded. Built for a Synthetic-Persona-Pretraining-recipe run
(arXiv:2608.13482) — these files carry ONLY document tokens (raw public-corpus
text); the persona annotations ride in a separate private sidecar and are
inserted at training time. See corpus_meta.json for the exact run arithmetic.
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