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Dongxu Zhang

8 accepted papers

2025

DMT-RoleBench: A Dynamic Multi-Turn Dialogue Based Benchmark for Role-Playing Evaluation of Large Language Model and Agent

AAAI 2025technical

Recent years have witnessed a profound evolution in the abilities of Large Language Model, which has significantly boosted the proliferation of role-playing agents and platforms. Nonetheless, there is a conspicuous absence of systematic and comprehensive evaluations of role-playing abilities which…

2024

Enhancing Hallucination Detection through Perturbation-Based Synthetic Data Generation in System Responses

ACL 2024findings

Detecting hallucinations in large language model (LLM) outputs is pivotal, yet traditional fine-tuning for this classification task is impeded by the expensive and quickly outdated annotation process, especially across numerous vertical domains and in the face of rapid LLM advancements. In this stud…

2022

Event-Event Relation Extraction using Probabilistic Box Embedding

ACL 2022short

To understand a story with multiple events, it is important to capture the proper relations across these events. However, existing event relation extraction (ERE) framework regards it as a multi-class classification task and do not guarantee any coherence between different relation types, such as an…

2022

Modeling Transitivity and Cyclicity in Directed Graphs via Binary Code Box Embeddings

NeurIPS 2022accept

Modeling directed graphs with differentiable representations is a fundamental requirement for performing machine learning on graph-structured data. Geometric embedding models (e.g. hyperbolic, cone, and box embeddings) excel at this task, exhibiting useful inductive biases for directed graphs. Howev…

Cited by 7SourcePDFScholar
2021

Capacity and Bias of Learned Geometric Embeddings for Directed Graphs

NeurIPS 2021poster

A wide variety of machine learning tasks such as knowledge base completion, ontology alignment, and multi-label classification can benefit from incorporating into learning differentiable representations of graphs or taxonomies. While vectors in Euclidean space can theoretically represent any graph,…

2020

Improving Local Identifiability in Probabilistic Box Embeddings

NeurIPS 2020poster

Geometric embeddings have recently received attention for their natural ability to represent transitive asymmetric relations via containment. Box embeddings, where objects are represented by n-dimensional hyperrectangles, are a particularly promising example of such an embedding as they are closed…

Cited by 71SourcePDFScholar
2019

Search-Guided, Lightly-Supervised Training of Structured Prediction Energy Networks

NeurIPS 2019poster

In structured output prediction tasks, labeling ground-truth training output is often expensive. However, for many tasks, even when the true output is unknown, we can evaluate predictions using a scalar reward function, which may be easily assembled from human knowledge or non-differentiable pipelin…

Cited by 12SourcePDFScholar
2019

Smoothing the Geometry of Probabilistic Box Embeddings

ICLR 2019oral

There is growing interest in geometrically-inspired embeddings for learning hierarchies, partial orders, and lattice structures, with natural applications to transitive relational data such as entailment graphs. Recent work has extended these ideas beyond deterministic hierarchies to probabilistical…

Cited by 106SourcePDFScholar