Search Results for author: Deren Lei

Found 7 papers, 5 papers with code

Chain of Natural Language Inference for Reducing Large Language Model Ungrounded Hallucinations

1 code implementation6 Oct 2023 Deren Lei, Yaxi Li, Mengya Hu, Mingyu Wang, Vincent Yun, Emily Ching, Eslam Kamal

Our framework uses Chain of Natural Language Inference (CoNLI) for hallucination detection and hallucination reduction via post-editing.

Hallucination Language Modelling +3

Extract, Denoise and Enforce: Evaluating and Improving Concept Preservation for Text-to-Text Generation

2 code implementations EMNLP 2021 Yuning Mao, Wenchang Ma, Deren Lei, Jiawei Han, Xiang Ren

In this paper, we present a systematic analysis that studies whether current seq2seq models, especially pre-trained language models, are good enough for preserving important input concepts and to what extent explicitly guiding generation with the concepts as lexical constraints is beneficial.

Conditional Text Generation Denoising

Learning to Reason in Round-based Games: Multi-task Sequence Generation for Purchasing Decision Making in First-person Shooters

1 code implementation12 Aug 2020 Yilei Zeng, Deren Lei, Beichen Li, Gangrong Jiang, Emilio Ferrara, Michael Zyda

In this work, we propose a Sequence Reasoner with Round Attribute Encoder and Multi-Task Decoder to interpret the strategies behind the round-based purchasing decisions.

Attribute Decision Making +1

Learning Collaborative Agents with Rule Guidance for Knowledge Graph Reasoning

1 code implementation EMNLP 2020 Deren Lei, Gangrong Jiang, Xiaotao Gu, Kexuan Sun, Yuning Mao, Xiang Ren

Walk-based models have shown their advantages in knowledge graph (KG) reasoning by achieving decent performance while providing interpretable decisions.

reinforcement-learning Reinforcement Learning (RL)

Deep Reinforcement Learning with Distributional Semantic Rewards for Abstractive Summarization

no code implementations IJCNLP 2019 Siyao Li, Deren Lei, Pengda Qin, William Yang Wang

Deep reinforcement learning (RL) has been a commonly-used strategy for the abstractive summarization task to address both the exposure bias and non-differentiable task issues.

Abstractive Text Summarization reinforcement-learning +2

Imposing Label-Relational Inductive Bias for Extremely Fine-Grained Entity Typing

1 code implementation NAACL 2019 Wenhan Xiong, Jiawei Wu, Deren Lei, Mo Yu, Shiyu Chang, Xiaoxiao Guo, William Yang Wang

Existing entity typing systems usually exploit the type hierarchy provided by knowledge base (KB) schema to model label correlations and thus improve the overall performance.

Entity Typing Inductive Bias

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