oosnow/mctd-checkpoints

MCTD lightweight checkpoints

Only MCTD Wa/action-head weights are provided, not Qwen base-model weights. Use with the matching MCTD github_release code and Qwen3-1.7B. resources.json pins every file's destination, byte count and SHA-256.

• initialization.tar.gz: the existing student-dependent Wa initialization and historical expert-SFT action-head warm start. The head is not random.
• alfworld-latent-sft-k4.tar.gz: the historical ALFWorld action-head-only latent-SFT checkpoint, k=4, packaged as a portable run at experiments/pretrained/alfworld/latent-sft-k4. Wa remained fixed in that training. It supports evaluation and initialization of a new OPD run.
• plancraft-latent-sft-k8-20260910.tar.gz: best checkpoint from 20260910-154609-BJT--latent-sft--plancraft--k8--m1, trained with a frozen Qwen3-1.7B backbone and initialized Wa, updating the action head only. Installs to experiments/pretrained/plancraft/latent-sft-k8, with matching command embeddings and original training configuration. This initializer is not compatible with a 7B backbone without a separately trained matching head.

For PlanCraft, python scripts/download_resources.py --environment plancraft installs the initializer. The release's bash scripts/plancraft_eight_gpu.sh runs OPD only from it (one epoch, then best/final full-test evaluation). The teacher is a separately managed API service.

PlanCraft SFT best: completed full-test evaluation

Pass@1 on all 580 test tasks, including the 20 checkpoint-selection tasks; maximum 30 environment steps per task. This is not a held-out-only result.

Task type	Successes / tasks	SR
Easy	69 / 200	34.5%
Medium	1 / 100	1.0%
Hard	0 / 180	0.0%
Impossible	42 / 100	42.0%
Overall	112 / 580	19.31%

Mean steps: 22.64; recorded evaluation wall time: 2,961.63 seconds (49.36 minutes), on a shared A100 GPU with four environment workers. Token consumption: 30,142,690 prompt tokens and 105,056 latent tokens; no generated reasoning text. There were no resource-failed attempts. The package includes the evaluation report and resolved configuration. W&B synchronization failed with a 403 write permission error; local results and this publication are complete.

The portable run has minimal evaluation/configuration metadata and weights. It is not a full training-history archive: optimizer/scheduler/RNG state is not included, so resuming the old optimizer run is unsupported. No new training or evaluation is claimed by publication.

Download with:

python scripts/download_resources.py --environment alfworld --with-pretrained

Command tables, including the original table matched to the historical SFT checkpoint, are in oosnow/mctd-data. Do not substitute a differently ordered vocabulary. Fetch the public base model from Qwen/Qwen3-1.7B, respecting its upstream terms. This card does not grant a blanket license over third-party model derivatives. Load serialized weights only from trusted sources; the downloader verifies their published checksums.

Habitat initialization (2026-09-09)

eb-habitat-initialization-20260909.tar.gz installs resources/eb-habitat-action-head.pt (4,222,551 bytes). This is a seeded random, untrained Habitat head, seed 42, compatible with Qwen3-1.7B. It is not a trained SFT or OPD result. The existing shared Wa initializer remains in initialization.tar.gz.

python scripts/download_resources.py --environment eb-habitat downloads both required initializers. No new Qwen backbone copy is uploaded. No new trained Habitat checkpoint or success-rate claim is implied by this resource release.