ts-align-benchmarks

TS-Align

TS-Align aligns multivariate time series with a language model for numeric metric question-answering and captioning. A frozen MOMENT time-series encoder feeds a fully fine-tuned Qwen3-4B-Instruct through a per-channel ("2-tunnel") projection with attention pooling, trained end-to-end with GRPO reinforcement learning against verifiable metric and caption rewards.

This repository is a self-contained benchmark bundle: the trained TS-Align checkpoints, the canonical evaluation data, and a reproduction harness for every baseline we compare against.

Contents

Trained checkpoints

Both checkpoints share the same architecture — MOMENT-1-base (frozen encoder) + Qwen3-4B-Instruct-2507 (fully fine-tuned), joined by a 2-tunnel per-channel projection (1-layer, 8-head channel transformer) with attention pooling gated at channel_pool_attn_min = 2. Trained with GRPO (2000 steps, PATRA-balanced caption reward, split-wise Gaussian tolerance σ = {univar 0.5, bivar 0.5, multivar 1.0}).

Each best-checkpoint/ holds:

• model-state-0000{1..6}.pt — the trainable weights (Qwen + projection + special-token embeddings). The MOMENT encoder is frozen and not shipped; load it from its base repo.
• tokenizer/ — the Qwen tokenizer with 4 added special tokens: <ts> </ts> <scale> </scale>.
• training.pt — metadata only (≈1.6 KB: shard manifest, special-token ids, trainer scalars). The optimizer state is intentionally not included.

How to load

You need the two base models plus the TS-Align inference code:

• MOMENT-1-base — https://huggingface.co/AutonLab/MOMENT-1-base
• Qwen3-4B-Instruct-2507 — https://huggingface.co/Qwen/Qwen3-4B-Instruct-2507
• TS-Align loader — infer/infer_local.py in the companion ts-align-rl code repository

load_checkpoint reads training.pt for the shard manifest and special-token ids, then loads the model-state-*.pt shards onto a freshly built MOMENT + Qwen3-4B model:

python infer/infer_local.py \
  --moment-path <path>/MOMENT-1-base \
  --llm-path    <path>/Qwen3-4B-Instruct-2507 \
  --tokenizer-path  Models/joint_grpo_min2/best-checkpoint/tokenizer \
  --checkpoint-path Models/joint_grpo_min2/best-checkpoint/training.pt \
  --channel-pool-attn-min-channels 2 \
  --series "10,12,11,13,12,14,13,15" \
  --prompt "<ts></ts> What is the mean of this series?"

Baseline placeholders

Models/<peer>/ — ChatTS-14B, GPT-OSS-20B, Qwen2.5-7B-Instruct, Qwen3-8B, Qwen3-14B, TimeOmni-1-7B, ITFormer-7B, MOMENT-1-large, Mistral-7B-v0.3, Time-MQA-Mistral-7B — each contain only a PLACE_MODEL_FILE_HERE.txt. These are third-party models we do not redistribute: download each from its official source and drop the weights in place to reproduce.

Reproducing the benchmarks

Every evaluated model has a bundle under results/<model>/ with a run.sh, an _infer/ harness, and its own README. Inputs are read from Benchmark_eval/; scoring uses a multi-kernel tolerance metric for numeric QA, precision/recall for captions, and RougeL/accuracy for TSQA. Predictions and scores are regenerated by the runners and are not checked in.

Caption precision/recall uses an NLP-extraction step: GLM-5.1 (temperature=0, the same un-tuned prompt for all models) reads each caption and extracts the numeric value it predicts for each mentioned metric. The prompt provides GLM with the metric key and an explanation of its statistical property, so it can align free-text mentions to the correct ground-truth metrics; extracted values are then scored against the ground truth under the same tolerance kernel (precision = correct / extracted, recall = ground-truth metrics correctly covered). Extractor: Benchmark_eval/TS_Caption_test/extract_metrics_withdef.py with the key→explanation map metric_defs.json.

Provenance for the third-party benchmarks is documented in Benchmarks/README.md; TS_Caption_test is our own out-of-sample set.

Notes

• Large files (checkpoint shards, evaluation data) are stored with Git LFS.
• The training.pt.full_bak optimizer states are kept locally only and are not published.

License

This repository's own content — the fine-tuned TS-Align checkpoints (Models/4level_grpo_min2/, Models/joint_grpo_min2/) and the TS_Caption_test evaluation set — is not yet released under a license (all rights reserved by the authors for now).

All third-party components keep their original licenses:

Models

Datasets

Sources and links for every dataset are in Benchmarks/README.md.