amzn/pecos

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PECOS - Prediction for Enormous and Correlated Spaces

Stars: 550
Forks: 113
Open beginner issues: 0
Indexed issues: 24
Avg merge: 21h 37m
Merged PRs (30d): 1

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 1, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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24 open issues indexed

A problem when using the pecos model to train xtransformer Open

bug

amzn/pecos#218 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Why does the XR-Transformer require exceptional RAM on Amazon-670k (and in other large datasets)? Open

bug

amzn/pecos#223 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Indexer / Clustering hyperparameter tuning Open

amzn/pecos#238 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Extreme multi-label classification - Text data - training set size for a class Open

amzn/pecos#239 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Xtransformer Predict - Threshold Open

amzn/pecos#241 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Trying to use HybridIndexer for Label Indexing, run into issue where TrieWrapper has no attribute '_sorted' Open

bug

amzn/pecos#244 · 14 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add FINGER: Fast Inference for Graph-based Approximate Nearest Neighbor Search Open

enhancement

amzn/pecos#245 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Perform inference in C++/Java Open

enhancement

amzn/pecos#246 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
ValueError: len(params.neg_mining_chain)=4 != 3 Open

bug

amzn/pecos#248 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Trying to understand Cluster chain shape using hybrid indexer Open

enhancement

amzn/pecos#249 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Hyperparameter optimization/tuning Open

enhancement

amzn/pecos#250 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
How do I adjust parameter when the recall of a particular label is zero In Classification Task? Open

enhancement

amzn/pecos#252 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Indexer as hierarchicalkmeans cannot get the correct label partition Open

bug

amzn/pecos#253 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
FineTune on Custom Dataset Open

enhancement

amzn/pecos#254 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Training process freezes without using GPUs Open

bug

amzn/pecos#255 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Newlines in Tfidf vectorizer corpus cause runtime exceptions when loading a trained vectorizer Open

bug

amzn/pecos#263 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Some confusion in pecos.utils.smat_utils.binarized Open

enhancement

amzn/pecos#265 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Floating point exception (core dumped) problem Open

bug

amzn/pecos#273 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Integrate Low-rank adaptation (LoRA) Open

enhancement

amzn/pecos#280 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Cannot replicate the XR-Linear performance with TF-IDF features and a Fine-tune Embedding Model Open

amzn/pecos#283 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Dose XRTransformer support relevance score of label Open

amzn/pecos#306 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Expand Encoder-Classes in XTransformer to include ModernBERT Open

enhancement

amzn/pecos#307 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Make Installable on Apple Silicon Open

enhancement

amzn/pecos#309 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Replace deprecated AdamW from transformers with torch.optim.AdamW Open

bug

amzn/pecos#311 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 14, 2026

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