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Xi Zhu

4 accepted papers

2025

iAgent: LLM Agent as a Shield between User and Recommender Systems

ACL 2025finding

Traditional recommender systems usually take the user-platform paradigm, where users are directly exposed under the control of the platform’s recommendation algorithms. However, the defect of recommendation algorithms may put users in very vulnerable positions under this paradigm. First, many sophis…

2023

Beyond Layout Embedding: Layout Attention with Gaussian Biases for Structured Document Understanding

EMNLP 2023long findings

Effectively encoding layout information is a central problem in structured document understanding. Most existing methods rely heavily on millions of trainable parameters to learn the layout features of each word from Cartesian coordinates. However, two unresolved questions remain: (1) Is the Cartesi…

Cited by 0SourceScholar
2022

Syntax-Based Graph Matching for Knowledge Base Question Answering

ICASSP 2022accepted

Semantic parsing is a mainstream method of knowledge base question answering task that first generates a set of logical forms according to question and knowledge base (KB), and then selects the most matching one to get answers. However, existing selection methods are usually based on word-level matc…

Cited by 0SourceScholar
2020

Overcoming Language Priors with Self-supervised Learning for Visual Question Answering

IJCAI 2020poster

Most Visual Question Answering (VQA) models suffer from the language prior problem, which is caused by inherent data biases. Specifically, VQA models tend to answer questions (e.g., what color is the banana?) based on the high-frequency answers (e.g., yellow) ignoring image contents. Existing approa…