Hooshaai/bert-comp-a3-compressor-sst2

BERT-Base (a3_compressor) — NeuralOps Compressed & LoRA-Healed Model Zoo

This repository provides a physically compressed and LoRA-healed checkpoint of google-bert/bert-base-uncased fine-tuned on GLUE SST-2, compressed using the a3_compressor (A3Compressor) engine from the NeuralOps Library at Pareto-selected rank k=256 (1.07x compression ratio, -6.5% parameter reduction).

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Compression & Architecture Profile

A3Compressor: A3: Activation-aware factorized SVD compressor. Uses E[x²] weighting (second moment), optional full Cholesky whitening, STRS rank search, and LayerNorm recalibration.

Property	Specification
Registry Key (COMPRESSOR_REGISTRY)	a3_compressor
NeuralOps Class & Family	A3Compressor (low_rank)
Source Implementation	neuralops/compression/low_rank/a3_compressor.py
Base Architecture	google-bert/bert-base-uncased (109,483,778 parameters, 12 layers, $D=768$)
Showcase Rank (k)	256 (LoRA Recovery Applied: False)
Compressed Parameter Count	102,405,890 (-6.46% reduction, 1.069x physical compression ratio)
Teacher Baseline SST-2 Acc	91.63%
Showcase Final SST-2 Acc	91.17% (Zero-Shot: 91.17%, Parity Delta: -0.46%)

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Multi-Rank Pareto Evaluation (k=256, 128, 64, 32)

Evaluated physically on NVIDIA GeForce RTX 3090 (24GB) on the GLUE SST-2 validation split (872 samples). Whenever zero-shot compression drops accuracy by > 2.0% alongside > 1.10x reduction, NeuralOps applies targeted r=8 LoRA healing (50 steps, lr=2e-4, 45s budget):

Rank (k)	Physical Ratio	Compressed Params (Reduction)	Zero-Shot Acc	Healed Acc	Parity vs Teacher (91.63%)
256 ⭐	1.07x	102,405,890 (-6.5%)	91.17%	91.17%	-0.46%
128	1.08x	101,177,090 (-7.6%)	90.14%	90.14%	-1.49%
64	1.06x	103,289,090 (-5.7%)	90.71%	90.71%	-0.92%
32	1.05x	104,439,554 (-4.6%)	91.17%	91.17%	-0.46%

(⭐ indicates the serialized checkpoint packaged in this Hugging Face repository.)

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Packaged Artifacts

• pytorch_model.bin: Full serialized compressed BERT state dictionary (with low-rank factors / quantization buffers / LoRA healing adapters baked in).
• config.json: Model configuration tagged with compression_method: "a3_compressor" and compression_rank: 256.
• compression_summary.json: Complete machine-readable telemetry across all evaluated ranks [256, 128, 64, 32].
• Tokenizer Assets: Standard bert-base-uncased vocabulary (vocab.txt, tokenizer.json, tokenizer_config.json).

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Quick Start (Reconstruction & Inference)

import torch
from huggingface_hub import hf_hub_download
from transformers import AutoTokenizer, BertForSequenceClassification
from neuralops.core.compression_pipeline import compress_model

repo_id = "tahamajs/bert-comp-a3-compressor-sst2"
tokenizer = AutoTokenizer.from_pretrained(repo_id)

# Reconstruct compressed NeuralOps topology and load serialized compressed + healed weights
model = BertForSequenceClassification.from_pretrained("google-bert/bert-base-uncased", num_labels=2)
model = compress_model(model, {"compressors": [{"method": "a3_compressor", "rank": 256}]})

ckpt_path = hf_hub_download(repo_id=repo_id, filename="pytorch_model.bin")
state_dict = torch.load(ckpt_path, map_location="cpu")
model.load_state_dict(state_dict, strict=False)
model.eval()

inputs = tokenizer("NeuralOps achieves strong compression without sacrificing downstream accuracy.", return_tensors="pt")
with torch.no_grad():
    logits = model(**inputs).logits
    pred = logits.argmax(dim=-1).item()
print("Predicted SST-2 Sentiment (0=Negative, 1=Positive):", pred)

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Quick Start (Universal NeuralOps Hub API)

import torch
from neuralops.hub import load_surgeried_model

# Load model and tokenizer/processor in one line directly from Hugging Face Hub
model, tokenizer = load_surgeried_model("tahamajs/bert-comp-a3-compressor-sst2")
model.eval()
print(f"Successfully loaded tahamajs/bert-comp-a3-compressor-sst2 with NeuralOps modular surgical weights!")

Citation

@software{neuralops2026compressorzoo,
  title   = {NeuralOps: Multi-Rank Compressed BERT-SST2 Zoo with Pareto LoRA Recovery},
  author  = {Majlesi, Taha},
  year    = {2026},
  url     = {https://github.com/tahamajs/NeuralOps}
}