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desh2806/
simplestories-persona-absurdist

Name: simplestories-persona-absurdist
Availability: InStock

supervised-fine-tuning

desh2806/simplestories-personas-10k

SimpleStories/SimpleStories-V2-5M

finetune

mit

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SimpleStories persona model — absurdist

Single-epoch SFT of SimpleStories/SimpleStories-V2-5M on the absurdist persona specialist from desh2806/simplestories-personas-10k.

Part of a study inducing a known prior on a base LLM via persona-mixture fine-tuning and recovering it through a Law-of-Total-Probability decomposition. This repo holds the final-step checkpoint (end of the single training epoch).

Training


base model	`SimpleStories/SimpleStories-V2-5M`
run	`absurdist` (`absurdist` persona specialist)
epochs	1 (single epoch — every example seen once)
final step	285 of 285 (285 steps/epoch)
train examples	9120
optimizer	AdamW, lr=0.0005, weight_decay=0.0
batch size	32
precision	fp32
seed	42

Validation loss at the final checkpoint (mean cross-entropy / scored token):

val_own: 1.7709
val_mix: 3.3652

Usage

python

from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained("desh2806/simplestories-persona-absurdist")
tokenizer = AutoTokenizer.from_pretrained("desh2806/simplestories-persona-absurdist")

# The base model has no BOS; seed generation with EOS (id=1) to start a new story.
import torch
seed = torch.tensor([[tokenizer.eos_token_id]])
out = model.generate(seed, max_new_tokens=150, do_sample=True, temperature=1.0, top_p=0.95,
                     eos_token_id=tokenizer.eos_token_id, pad_token_id=tokenizer.eos_token_id)
print(tokenizer.decode(out[0][1:], skip_special_tokens=True))

Tokenization convention used in training: add_special_tokens=False, every story wrapped in EOS (id=1) on both sides — [EOS, tokens…, EOS] — truncated to 512 tokens. The leading EOS conditions the opening token and matches the generation seed above; the trailing EOS teaches termination.