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Playbox-Time-Hammer
kridaydave/Playbox-Time-Hammer
Playbox-Time-Hammer is a machine learning model from kridaydave. Use it for the machine learning task on the model card, and read the license before you ship it in a product. The card lists the license as apache-2.0.
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1.5 GB on disk
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At a glance
- License
- apache-2.0
- Model type
- qwen3_5_text
- Access
- Public
- Created
- Jul 3, 2026
- Updated
- Jul 8, 2026
- SHA
- f48d4993
Model card
From the Hugging Face model README
Model Name: Playbox-Time-Hammer
Architecture: Qwen3.5-0.8B-Base (initialized from Playbox_RFT_Checkpoint)
Parameters: ~0.8B
Developers: Epoch AI Labs
Intended Use: Domain-specific exact-arithmetic specialist exclusively for schedule and elapsed-time calculations.
Tool Integration: Trained to emit exact-arithmetic tool calls and consume results for the time_add(hhmm, [minutes...]) tool, bypassing unreliable internal time arithmetic.
Training Pipeline: Multi-turn Tool-Integrated Reasoning (TIR) SFT using selective label masking (learning to emit tools and process tool responses, but ignoring prompts/tool injections during loss calculation). Max 80 updates.
Performance: Schedule Elapsed OOD Family: 100.0% accuracy (up from 0.0% with the direct RFT). Limitations: Hyper-specialized. Suffers from complete catastrophic forgetting on general math distribution. Must only be invoked via a high-precision router for appropriate problems.
- Type
- qwen3_5_text
- License
- apache-2.0
- Created
- Jul 3, 2026
- Updated
- Jul 8, 2026