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Weijia Lu

6 accepted papers

2026

AgentPO: Enhancing Multi-Agent Collaboration via Reinforcement Learning

ICLR 2026poster

Multi-Agent Systems (MAS) offer a powerful paradigm for solving complex problems through distributed reasoning and collaboration. However, their effectiveness is often hindered by the challenge of optimizing interactions among agents. To address this, we introduce AgentPO, a novel framework that dir…

Cited by 0SourceScholar
2026

ComLQ: Benchmarking Complex Logical Queries in Information Retrieval

AAAI 2026technical

Information retrieval (IR) systems play a critical role in navigating information overload across various applications. Existing IR benchmarks primarily focus on simple queries that are semantically analogous to single- and multi-hop relations, overlooking complex logical queries involving first-ord

Cited by 0SourcePDFScholar
2026

ProSAR: Prototype-Guided Semantic Augmentation and Refinement for Time Series Contrastive Learning

ICML 2026poster

Contrastive learning has advanced the representation learning across domains, yet its success relies on data augmentations that preserve semantic contents while providing the view diversities. Multivariate time series, however, are inherently noisy, non-stationary, and lack such intuitive semantic c…

Cited by 0SourceScholar
2025

FedSMU: Communication-Efficient and Generalization-Enhanced Federated Learning through Symbolic Model Updates

ICML 2025poster

The significant communication overhead and client data heterogeneity have posed an important challenge to current federated learning (FL) paradigm. Existing compression-based and optimization-based FL algorithms typically focus on addressing either the model compression challenge or the data heterog…

Cited by 0SourcePDFScholar
2025

LBI-FL: Low-Bit Integerized Federated Learning with Temporally Dynamic Bit-Width Allocation

ICML 2025poster

Federated learning (FL) is greatly challenged by the communication bottleneck and computation limitation on clients. Existing methods based on quantization for FL cannot simultaneously reduce the uplink and downlink communication cost and mitigate the computation burden on clients. To address this p…

Cited by 0SourcePDFScholar
2025

Logical Consistency is Vital: Neural-Symbolic Information Retrieval for Negative-Constraint Queries

ACL 2025finding

Information retrieval plays a crucial role in resource localization. Current dense retrievers retrieve the relevant documents within a corpus via embedding similarities, which compute similarities between dense vectors mainly depending on word co-occurrence between queries and documents, but overloo…