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Jungang Xu

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Open access Oct 2026

JTCSE: Joint tensor-modulus constraints and cross-attention for unsupervised contrastive learning of sentence embeddings.

Unsupervised contrastive learning has attracted significant attention in natural language processing for learning sentence embeddings. Existing methods primarily constrain the orientation distribution of representations in high-dimensional semantic space via cosine-based objectives, yet the embedding vector also posses...

Tian-Yu Zong, Bingkang Shi, Hong-Zhu Yi et al. · 0 citations

CircuitFlow: Learning Dynamic Representations for Logic Optimization

Graph neural networks (GNNs) have emerged as a powerful tool for learning circuit representation, but largely ignore the dynamic nature of logic optimization (LO), leading to a severe ”domain gap” where embedding quality degrades after heuristic transformations. To address this, we propose CircuitFlow, a framework for...

Miao Liu, Xin-Hua Lai, Li-Wei Ni et al. · 0 citations
Jul 2026

ModelEquivBench: Certifying Multi-Relational Evaluation of LLM-Generated Optimization Models

ModelEquivBench is presented, a certifying, multi-relational evaluation system that reports a per-pair semantic profile E0--E6 that contains relation-appropriate, independently re-checkable evidence: replayable traces or explicit maps for E0--E1, exact-rational certificates for positive E2--E6 conclusions, and explicit...

Penglin Zhu, Jungang Xu · 0 citations
Preprint Jul 2026

IR2Solve: Structured Intermediate Representations for Cost-Efficient Optimization Autoformulation

Large language models (LLMs) can translate natural-language optimization problems into solver-ready formulations, but direct code generation is brittle: schema, indexing, and semantic errors can cause compilation failures, infeasible models, or incorrect objectives, while iterative repair, search, and multi-agent workf...

Penglin Zhu, Linhai Zhang, Jungang Xu et al. · 0 citations

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