A distilled chunk→concept tagger for the guru comparative-religion pipeline. Fine-tuned from Qwen2.5-7B-Instruct on 2,808 (passage, tag-set) pairs — labels from a larger 27B teacher, refined by human review — this model scores passages from mystical texts against a curated taxonomy of comparative-religion concepts.
Given a passage of mystical text and a list of candidate concepts (each with an ID and a one-sentence definition), the model returns a JSON array rating every present concept on a 0–3 scale:
0 — not present
1 — peripherally present
2 — clearly present
3 — central theme
Concepts scoring 0 are omitted. The output is strict JSON — no markdown, no prose. The prompt contract matches the production caller in guru exactly, so this model is a drop-in replacement for the teacher in the tagging step.
Why it exists
The guru pipeline indexes a multi-tradition corpus of mystical texts by tagging each passage against a working taxonomy of ~88 (and growing) comparative-religion concepts (e.g. theosis, paradox_as_teaching, divine_marriage, archons). Two upstream options had problems:
The 27B teacher produces high-quality labels but is too slow to re-tag the full corpus on every taxonomy revision.
The off-the-shelf 7B base model is fast enough but is unreliable: it under-tags (recall 0.12 vs human labels on the held-out test), invents out-of-taxonomy IDs (9 in 130 chunks), and misjudges severity.
This model closes most of that gap at the 7B compute budget.
Evaluation (v3)
Held-out test split from the same data distribution, scored against both the 27B teacher's labels and independent human accept/reject verdicts. base = Qwen2.5-7B-Instruct (no fine-tuning). All models queried at temperature 0 with identical prompts via llama-server, on the identical held-out chunks.
Strongest signal — human verdicts are an independent ground truth.
Model
Precision
Recall
F1
Specificity
base
0.833
0.118
0.207
0.953
v1
0.673
0.356
0.466
0.655
v2
0.759
0.415
0.537
0.737
v3
0.769
0.524
0.623
0.686
27B teacher (reference)
0.666
1.000
0.799
0.000
v3 beats every prior version on F1 and recall, and its precision (0.769) clears the 27B teacher's (0.666) — the student now rejects teacher mistakes rather than just mimicking. (The teacher's recall is 1.0 by construction — humans only reviewed tags it emitted — so its precision is the comparable number.)
vs teacher labels (130 chunks, 88 concepts)
Model
Precision
Recall
F1
Macro-F1
MAE
Parse rate
OOT-IDs
Lat (s)
base
0.398
0.152
0.220
0.176
0.53
96.2%
9
3.97
v1
0.621
0.509
0.560
0.386
0.37
100.0%
2
4.94
v2
0.669
0.518
0.584
0.502
0.42
99.2%
2
4.75
v3
0.636
0.585
0.609
0.522
0.42
96.9%
0
5.83
Where v3 moves the needle vs v2
v3's gain is recall without a precision cost: against human truth, recall 0.415 → 0.524 (+0.109) while precision held (0.759 → 0.769). It came purely from data — identical hyperparameters, but labels now 48% human-verified with ~6,000 more human-accepted positives. Concepts v2 was blind to or had lost recover (archons 0 → 0.667, living_god +0.166, body_as_obstacle +0.154), and v3 invents zero out-of-taxonomy IDs (v2: 2). The cost is small: parse rate dips to 96.9% and latency rises to ~5.8 s/chunk, both because v3 emits more tags.
Method: Supervised fine-tuning (TRL SFTTrainer) with QLoRA via Unsloth
LoRA: r=32, α=64, dropout=0, applied to all attention + MLP projections (q,k,v,o,gate,up,down)
Schedule: 3 epochs, batch 1 × grad-accum 16 (effective 16), paged AdamW-8bit, lr 1.5e-4, cosine, warmup 0.03 — identical to v2, so the v2→v3 gain isolates the data effect
Sequence length: 5632 (88-concept prompts run median ~5170 tokens; 5632 is the largest context that fits backward on a 24 GB 3090)
Chat template:qwen-2.5
Checkpoint: best-by-val-loss (eval_loss 0.2912)
Hardware: single 24 GB GPU (NVIDIA RTX 3090)
Wall-clock: 14h 50m
Seed: 42
Training data (v3)
Source: staged_tags table of a guru.db snapshot taken after a human-review push, filtered to rows produced by teacher Qwen3.5-27B-UD-Q4_K_XL.gguf with prompt version v1, status ∈ {pending, accepted} — so human-rejected tags are excluded.
2,808 chunks across 88 concepts (in-export)
25,559 target tags: 48% human-accepted (12,187), the rest unreviewed teacher labels, zero human-rejected. This is the key change from v2, whose targets were almost entirely unreviewed.
Splits: 2,538 train / 134 val / 136 test (90/5/5, deterministic chunk_id hash — preserves the v2 held-out set for apples-to-apples eval)
457 train+val chunks (17%) dropped during training because their tokenized length exceeded max_seq_length=5632; net 2,102 training examples. The denser human-accepted labels make more examples exceed the 3090's context ceiling — fully exploiting the new signal wants a larger GPU.
The v2→v3 lever was recall and label quality, not precision cleanup: ~6,000 more human-accepted positives (added to existing chunks + 210 newly-tagged chunks) lifted held-out recall against human truth by +0.109 with no precision loss.
Files in this repo
adapter/ — LoRA adapter (~310 MB). Load on top of the base model; this is the canonical, reproducible artifact.
merged/ — adapter merged into base weights, FP16 (~15 GB). For direct from_pretrained.
gguf/ — quantized for llama.cpp / Ollama / llama-server.
The --jinja flag is required so the model's chat template is applied. The guru tagging caller hits the OpenAI-compatible /v1/chat/completions endpoint.
The model expects the exact prompt structure used at training time. See src/rellm/formats.py in the training repo for the canonical builder; the short version is:
System:"You are a comparative religion scholar helping to build a concept index of mystical texts. For each passage given, score it against every concept definition provided. Respond ONLY with a valid JSON array (no markdown, no commentary)."
User: a passage block, the 0–3 scoring rubric, and a JSON list of {id, definition} candidate concepts, ending with the output schema and Return [] if nothing scores >= 1.
Deviating from this format will degrade quality — the model was trained on a single prompt template.
Versions
All three versions re-scored on the same held-out test split with the same harness, so the columns are directly comparable (numbers differ slightly from each version's original card, which used the taxonomy and labels current at its release).
Tag
Date
F1 vs teacher
Macro-F1
F1 vs human
Recall vs human
Training data
v1
2026-05-13
0.560
0.386
0.466
0.356
2,188 chunks, 61 concepts
v2
2026-05-22
0.584
0.502
0.537
0.415
2,598 chunks, 88 concepts
v3
2026-05-26
0.609
0.522
0.623
0.524
2,808 chunks, 88 concepts
Pin a specific version with revision="v1", revision="v2", or revision="v3" when downloading.
v1 / v2 (historical)
v1 (2026-05-13) was trained on the 61-concept taxonomy snapshot (2,188 SFT examples). v2 (2026-05-22) expanded to the 88-concept taxonomy and ~2,600 chunks, lifting macro-F1 from broader concept coverage; its targets were almost entirely unreviewed teacher labels. v3 keeps v2's taxonomy and hyperparameters but trains on human-reviewed labels (48% accepted, rejected dropped), which is what lifted recall.
Both are preserved at the v1 and v2 git tags on the HF and GitHub repos. Use them to reproduce earlier results exactly; otherwise prefer v3.
Limitations
Occasional over-generation (parse rate 96.9%). On ~3% of chunks v3 keeps emitting tag objects until it hits the token cap and truncates into invalid JSON. It's the flip side of v3's higher recall (it emits more), is non-deterministic even at temperature 0, and is not fixed by raising max_tokens. Handle downstream with a truncation-salvage parser or a retry on parse failure. (v2 parsed at 99.2%.)
Domain-locked. v3 broadened human-reviewed coverage across mid-frequency traditions (christian_mysticism, greek_mystery, taoism gained most), but the corpus is still heavily Mediterranean / Greek-philosophical at the long tail. Calibration on East-Asian, South-Asian, and indigenous traditions remains weak.
Taxonomy-bound. Scoring is conditioned on the concept list passed in the prompt. The model will faithfully ignore concepts not given to it; if you change the taxonomy meaningfully, retrain.
Imbalanced concepts. A few low-frequency concepts still have weak boundaries — too few teacher positives. v3 regressed slightly vs v2 on evil_as_privation (0.42 → 0.24) and hidden_sayings (0.67 → 0.56); filter or boost these in downstream review. (v3 recovered several that earlier versions missed, e.g. archons 0 → 0.67, living_god +0.17.)
Capacity-capped recall. v3's denser labels push 17% of training examples past the 24 GB 3090's 5632-token ceiling, where they're dropped. Recall (0.524 vs human truth) is good but not teacher-level; closing the rest likely needs a larger GPU training at >5632 ctx, not more data.
Latency. Greedy decoding at ~5.8 s/chunk on a single 24 GB GPU (up from v2's 4.7, since v3 emits more) is fine for batch corpus tagging but not interactive use. Use the Q4_K_M GGUF for faster local inference.
Not a chat model. This is a tagging specialist. Don't expect general assistant behavior — it was tuned on a single task and prompt format.
License
Apache 2.0
Citation
bibtex
1@software{rellm_qwen25_7b,
2 author = {4rc4n4},
3 title = {qwen2.5-7b-rellm: a distilled chunk→concept tagger for comparative-religion corpora},
4 year = {2026},
5 url = {https://huggingface.co/4rc4n4/qwen2.5-7b-rellm}
6}
