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ANLP A2 Part 2 β€” mars

Dense decoder-only Transformer (Part 1 config 1, 33.4M params) trained for next-token prediction on browndw/human-ai-parallel-corpus with a from-scratch mars optimizer (lr 0.001).

Final: val loss 3.1919, test BLEU 0.8750586542990738, tokens 48,496,640.

Load with src.part1.hub.load_exported_model(<folder>) from the assignment repo.

{
  "optimizer": "mars",
  "lr": 0.001,
  "hparams": {
    "betas": [
      0.9,
      0.95
    ],
    "eps": 1e-08,
    "weight_decay": 0.1,
    "gamma": 0.025
  },
  "fraction": 1.0,
  "batch_size": 64,
  "total_steps": 2960,
  "warmup_steps": 296,
  "tokens_per_step": 16384,
  "dataset_tokens": 48512768,
  "n_params": 33358848,
  "seed": 42,
  "data_stats": {
    "n_rows": 66320,
    "n_base_docs": {
      "test": 414,
      "val": 414,
      "train": 7462
    },
    "train_stream_tokens": 48512889,
    "val_stream_tokens": 2698138,
    "n_train_windows": 189503,
    "n_val_windows": 10539,
    "n_bleu_items": 414,
    "seq_len": 256,
    "seed": 0
  },
  "curve": [
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      "step": 0,
      "tokens": 0,
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      "val_ppl": 18151.587088404638,
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      "test_bleu": 0.14436034784732546,
      "eval_time_s": 32.27794098854065
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      "test_bleu": 0.3750821728312126,
      "eval_time_s": 31.82180142402649
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    {
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      "val_loss": 3.2787492945542858,
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      "val_tokens": 2697984,
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    {
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      "val_loss": 3.2263052984075333,
      "val_ppl": 25.186428513813528,
      "val_tokens": 2697984,
      "test_bleu": 0.5983417574986116,
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    {
      "step": 2664,
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      "val_loss": 3.1980376503750114,
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      "test_bleu": 0.8080309986365949,
      "eval_time_s": 31.84360098838806
    },
    {
      "step": 2960,
      "tokens": 48496640,
      "dataset_fraction": 0.9996675514371804,
      "val_loss": 3.191900298721888,
      "val_ppl": 24.334626592911402,
      "val_tokens": 2697984,
      "test_bleu": 0.8750586542990738,
      "eval_time_s": 31.85160231590271
    }
  ],
  "diverged": false,
  "wandb_url": "https://wandb.ai/dnebhrajani-v/anlp-a2-part2/runs/3zlifir3",
  "hf_url": null,
  "train_time_s": 875.580427646637,
  "final_val_loss": 3.191900298721888
}
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