Search Results for author: Zhiyu Chen

Found 41 papers, 21 papers with code

Dependency Relationships-Enhanced Attentive Group Recommendation in HINs

no code implementations19 Nov 2023 Juntao Zhang, Sheng Wang, Zhiyu Chen, Xiandi Yang, Zhiyong Peng

Finally, we develop an attention aggregator that aggregates users' preferences as the group's preferences for the group recommendation task.

MultiCoNER v2: a Large Multilingual dataset for Fine-grained and Noisy Named Entity Recognition

no code implementations20 Oct 2023 Besnik Fetahu, Zhiyu Chen, Sudipta Kar, Oleg Rokhlenko, Shervin Malmasi

We present MULTICONER V2, a dataset for fine-grained Named Entity Recognition covering 33 entity classes across 12 languages, in both monolingual and multilingual settings.

named-entity-recognition Named Entity Recognition +2

Empowering Psychotherapy with Large Language Models: Cognitive Distortion Detection through Diagnosis of Thought Prompting

1 code implementation11 Oct 2023 Zhiyu Chen, Yujie Lu, William Yang Wang

Mental illness remains one of the most critical public health issues of our time, due to the severe scarcity and accessibility limit of professionals.

Generate-then-Retrieve: Intent-Aware FAQ Retrieval in Product Search

no code implementations6 Jun 2023 Zhiyu Chen, Jason Choi, Besnik Fetahu, Oleg Rokhlenko, Shervin Malmasi

We propose an intent-aware FAQ retrieval system consisting of (1) an intent classifier that predicts when a user's information need can be answered by an FAQ; (2) a reformulation model that rewrites a query into a natural question.


Unconfounded Propensity Estimation for Unbiased Ranking

no code implementations17 May 2023 Dan Luo, Lixin Zou, Qingyao Ai, Zhiyu Chen, Chenliang Li, Dawei Yin, Brian D. Davison

The goal of unbiased learning to rank (ULTR) is to leverage implicit user feedback for optimizing learning-to-rank systems.


Multimodal Procedural Planning via Dual Text-Image Prompting

1 code implementation2 May 2023 Yujie Lu, Pan Lu, Zhiyu Chen, Wanrong Zhu, Xin Eric Wang, William Yang Wang

The key challenges of MPP are to ensure the informativeness, temporal coherence, and accuracy of plans across modalities.


Reinforced Question Rewriting for Conversational Question Answering

no code implementations27 Oct 2022 Zhiyu Chen, Jie Zhao, Anjie Fang, Besnik Fetahu, Oleg Rokhlenko, Shervin Malmasi

Furthermore, human evaluation shows that our method can generate more accurate and detailed rewrites when compared to human annotations.

Question Rewriting Retrieval

Improving Medical Predictions by Irregular Multimodal Electronic Health Records Modeling

1 code implementation18 Oct 2022 Xinlu Zhang, Shiyang Li, Zhiyu Chen, Xifeng Yan, Linda Petzold

Our method first addresses irregularity in each single modality by (1) modeling irregular time series by dynamically incorporating hand-crafted imputation embeddings into learned interpolation embeddings via a gating mechanism, and (2) casting a series of clinical note representations as multivariate irregular time series and tackling irregularity via a time attention mechanism.

Imputation Irregular Time Series +2

Explanations from Large Language Models Make Small Reasoners Better

no code implementations13 Oct 2022 Shiyang Li, Jianshu Chen, Yelong Shen, Zhiyu Chen, Xinlu Zhang, Zekun Li, Hong Wang, Jing Qian, Baolin Peng, Yi Mao, Wenhu Chen, Xifeng Yan

Integrating free-text explanations to in-context learning of large language models (LLM) is shown to elicit strong reasoning capabilities along with reasonable explanations.

Explanation Generation Multi-Task Learning

ConvFinQA: Exploring the Chain of Numerical Reasoning in Conversational Finance Question Answering

1 code implementation7 Oct 2022 Zhiyu Chen, Shiyang Li, Charese Smiley, Zhiqiang Ma, Sameena Shah, William Yang Wang

With the recent advance in large pre-trained language models, researchers have achieved record performances in NLP tasks that mostly focus on language pattern matching.

Conversational Question Answering

PIM-QAT: Neural Network Quantization for Processing-In-Memory (PIM) Systems

no code implementations18 Sep 2022 Qing Jin, Zhiyu Chen, Jian Ren, Yanyu Li, Yanzhi Wang, Kaiyuan Yang

In this paper, we propose a method for training quantized networks to incorporate PIM quantization, which is ubiquitous to all PIM systems.


Model-based Unbiased Learning to Rank

1 code implementation24 Jul 2022 Dan Luo, Lixin Zou, Qingyao Ai, Zhiyu Chen, Dawei Yin, Brian D. Davison

Existing methods in unbiased learning to rank typically rely on click modeling or inverse propensity weighting (IPW).

Information Retrieval Learning-To-Rank +1

StruBERT: Structure-aware BERT for Table Search and Matching

1 code implementation27 Mar 2022 Mohamed Trabelsi, Zhiyu Chen, Shuo Zhang, Brian D. Davison, Jeff Heflin

In this paper, we propose StruBERT, a structure-aware BERT model that fuses the textual and structural information of a data table to produce context-aware representations for both textual and tabular content of a data table.

Table Retrieval Table Search

F8Net: Fixed-Point 8-bit Only Multiplication for Network Quantization

1 code implementation ICLR 2022 Qing Jin, Jian Ren, Richard Zhuang, Sumant Hanumante, Zhengang Li, Zhiyu Chen, Yanzhi Wang, Kaiyuan Yang, Sergey Tulyakov

Our approach achieves comparable and better performance, when compared not only to existing quantization techniques with INT32 multiplication or floating-point arithmetic, but also to the full-precision counterparts, achieving state-of-the-art performance.


FinQA: A Dataset of Numerical Reasoning over Financial Data

1 code implementation EMNLP 2021 Zhiyu Chen, Wenhu Chen, Charese Smiley, Sameena Shah, Iana Borova, Dylan Langdon, Reema Moussa, Matt Beane, Ting-Hao Huang, Bryan Routledge, William Yang Wang

In contrast to existing tasks on general domain, the finance domain includes complex numerical reasoning and understanding of heterogeneous representations.

Question Answering

Programmable FPGA-based Memory Controller

no code implementations21 Aug 2021 Sasindu Wijeratne, Sanket Pattnaik, Zhiyu Chen, Rajgopal Kannan, Viktor Prasanna

Since developing memory controllers for different applications is time-consuming, this paper introduces a modular and programmable memory controller that can be configured for different target applications on available hardware resources.


CAP-RAM: A Charge-Domain In-Memory Computing 6T-SRAM for Accurate and Precision-Programmable CNN Inference

no code implementations6 Jul 2021 Zhiyu Chen, Zhanghao Yu, Qing Jin, Yan He, Jingyu Wang, Sheng Lin, Dai Li, Yanzhi Wang, Kaiyuan Yang

A compact, accurate, and bitwidth-programmable in-memory computing (IMC) static random-access memory (SRAM) macro, named CAP-RAM, is presented for energy-efficient convolutional neural network (CNN) inference.

Automatic Head Overcoat Thickness Measure with NASNet-Large-Decoder Net

no code implementations22 Jun 2021 Youshan Zhang, Brian D. Davison, Vivien W. Talghader, Zhiyu Chen, Zhiyong Xiao, Gary J. Kunkel

To further improve segmentation results, we are the first to propose a post-processing layer to remove irrelevant portions in the segmentation result.

Image Segmentation Segmentation +1

Local Aggressive Adversarial Attacks on 3D Point Cloud

1 code implementation19 May 2021 Yiming Sun, Feng Chen, Zhiyu Chen, Mingjie Wang

However, the perturbations of global point are not effective for misleading the victim model.

Adversarial Attack Image to 3D

WTR: A Test Collection for Web Table Retrieval

1 code implementation5 May 2021 Zhiyu Chen, Shuo Zhang, Brian D. Davison

We describe the development, characteristics and availability of a test collection for the task of Web table retrieval, which uses a large-scale Web Table Corpora extracted from the Common Crawl.

Table Retrieval Test

Inductive Relation Prediction by BERT

1 code implementation12 Mar 2021 Hanwen Zha, Zhiyu Chen, Xifeng Yan

Relation prediction in knowledge graphs is dominated by embedding based methods which mainly focus on the transductive setting.

Few-Shot Learning Inductive Relation Prediction +3

Neural ranking models for document retrieval

no code implementations23 Feb 2021 Mohamed Trabelsi, Zhiyu Chen, Brian D. Davison, Jeff Heflin

A variety of deep learning models have been proposed, and each model presents a set of neural network components to extract features that are used for ranking.

Information Retrieval Retrieval

NUANCED: Natural Utterance Annotation for Nuanced Conversation with Estimated Distributions

1 code implementation Findings (EMNLP) 2021 Zhiyu Chen, Honglei Liu, Hu Xu, Seungwhan Moon, Hao Zhou, Bing Liu

As there is no clean mapping for a user's free form utterance to an ontology, we first model the user preferences as estimated distributions over the system ontology and map the users' utterances to such distributions.

Dialogue State Tracking

Pretrained Generalized Autoregressive Model with Adaptive Probabilistic Label Clusters for Extreme Multi-label Text Classification

2 code implementations5 Jul 2020 Hui Ye, Zhiyu Chen, Da-Han Wang, Brian D. Davison

Extreme multi-label text classification (XMTC) is a task for tagging a given text with the most relevant labels from an extremely large label set.

Multi-Label Text Classification

Table Search Using a Deep Contextualized Language Model

1 code implementation19 May 2020 Zhiyu Chen, Mohamed Trabelsi, Jeff Heflin, Yinan Xu, Brian D. Davison

Pretrained contextualized language models such as BERT have achieved impressive results on various natural language processing benchmarks.

Language Modelling Table Retrieval +1

Logical Natural Language Generation from Open-Domain Tables

1 code implementation ACL 2020 Wenhu Chen, Jianshu Chen, Yu Su, Zhiyu Chen, William Yang Wang

To facilitate the study of the proposed logical NLG problem, we use the existing TabFact dataset \cite{chen2019tabfact} featured with a wide range of logical/symbolic inferences as our testbed, and propose new automatic metrics to evaluate the fidelity of generation models w. r. t.\ logical inference.

Text Generation

Towards the standardization of quantum state verification using optimal strategies

no code implementations3 Feb 2020 Xinhe Jiang, Kun Wang, Kaiyi Qian, Zhaozhong Chen, Zhiyu Chen, Liangliang Lu, Lijun Xia, Fangmin Song, Shining Zhu, Xiaosong Ma

We experimentally obtain the scaling parameter of $r=-0. 88\pm$0. 03 and $-0. 78\pm$0. 07 for nonadaptive and adaptive strategies, respectively.

Quantum Physics Optics

Leveraging Schema Labels to Enhance Dataset Search

no code implementations27 Jan 2020 Zhiyu Chen, Haiyan Jia, Jeff Heflin, Brian D. Davison

We incorporate the generated schema labels into a mixed ranking model which not only considers the relevance between the query and dataset metadata but also the similarity between the query and generated schema labels.

Table Retrieval Test

Global Textual Relation Embedding for Relational Understanding

1 code implementation ACL 2019 Zhiyu Chen, Hanwen Zha, Honglei Liu, Wenhu Chen, Xifeng Yan, Yu Su

Pre-trained embeddings such as word embeddings and sentence embeddings are fundamental tools facilitating a wide range of downstream NLP tasks.

Action Classification Sentence Embeddings +1

Few-Shot NLG with Pre-Trained Language Model

2 code implementations ACL 2020 Zhiyu Chen, Harini Eavani, Wenhu Chen, Yinyin Liu, William Yang Wang

Neural-based end-to-end approaches to natural language generation (NLG) from structured data or knowledge are data-hungry, making their adoption for real-world applications difficult with limited data.

Few-Shot Learning Language Modelling +1

Mask Editor : an Image Annotation Tool for Image Segmentation Tasks

1 code implementation17 Sep 2018 Chuanhai Zhang, Kurt Loken, Zhiyu Chen, Zhiyong Xiao, Gary Kunkel

Mask Editor allows drawing any bounding curve to mark objects and improves efficiency to mark objects with irregular shapes.

Image Cropping Image Segmentation +1

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