no code implementations • 28 Apr 2015 • Piji Li, Lidong Bing, Wai Lam, Hang Li, Yi Liao
We propose a new MDS paradigm called reader-aware multi-document summarization (RA-MDS).
no code implementations • IJCNLP 2015 • Lidong Bing, Piji Li, Yi Liao, Wai Lam, Weiwei Guo, Rebecca J. Passonneau
We propose an abstraction-based multi-document summarization framework that can construct new sentences by exploring more fine-grained syntactic units than sentences, namely, noun/verb phrases.
no code implementations • 21 Jun 2017 • Bei Shi, Wai Lam, Shoaib Jameel, Steven Schockaert, Kwun Ping Lai
Word embedding models such as Skip-gram learn a vector-space representation for each word, based on the local word collocation patterns that are observed in a text corpus.
no code implementations • 1 Aug 2017 • Piji Li, ZiHao Wang, Zhaochun Ren, Lidong Bing, Wai Lam
In essence, writing some tips and giving a numerical rating are two facets of a user's product assessment action, expressing the user experience and feelings.
1 code implementation • EMNLP 2017 • Piji Li, Wai Lam, Lidong Bing, ZiHao Wang
We propose a new framework for abstractive text summarization based on a sequence-to-sequence oriented encoder-decoder model equipped with a deep recurrent generative decoder (DRGN).
Ranked #5 on Text Summarization on DUC 2004 Task 1
no code implementations • WS 2017 • Piji Li, Lidong Bing, Wai Lam
We investigate the problem of reader-aware multi-document summarization (RA-MDS) and introduce a new dataset for this problem.
no code implementations • EMNLP 2017 • Piji Li, Wai Lam, Lidong Bing, Weiwei Guo, Hang Li
The attention weights are learned automatically by an unsupervised data reconstruction framework which can capture the sentence salience.
no code implementations • EMNLP 2017 • Xin Li, Wai Lam
We propose a novel LSTM-based deep multi-task learning framework for aspect term extraction from user review sentences.
Aspect-Based Sentiment Analysis (ABSA) Multi-Task Learning +2
no code implementations • 28 Mar 2018 • Piji Li, Lidong Bing, Wai Lam
For the critic, we combine the maximum likelihood estimator with a well designed global summary quality estimator which is a neural network based binary classifier aiming to make the generated summaries indistinguishable from the human-written ones.
1 code implementation • EMNLP 2018 • Yi Liao, Lidong Bing, Piji Li, Shuming Shi, Wai Lam, Tong Zhang
For example, an input sequence could be a word sequence, such as review sentence and advertisement text.
1 code implementation • 2 May 2018 • Xin Li, Lidong Bing, Piji Li, Wai Lam, Zhimou Yang
Aspect Term Extraction (ATE), a key sub-task in Aspect-Based Sentiment Analysis, aims to extract explicit aspect expressions from online user reviews.
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +2
2 code implementations • ACL 2018 • Xin Li, Lidong Bing, Wai Lam, Bei Shi
Between the two layers, we propose a component to generate target-specific representations of words in the sentence, meanwhile incorporate a mechanism for preserving the original contextual information from the RNN layer.
Ranked #19 on Aspect-Based Sentiment Analysis (ABSA) on SemEval-2014 Task-4 (Laptop (Acc) metric)
no code implementations • ACL 2018 • Bei Shi, Zihao Fu, Lidong Bing, Wai Lam
Given reviews from different domains, some existing methods for word embeddings exploit sentiment information, but they cannot produce domain-sensitive embeddings.
no code implementations • COLING 2018 • Qian Yu, Wai Lam, ZiHao Wang
Providing instant responses for product questions in E-commerce sites can significantly improve satisfaction of potential consumers.
1 code implementation • NAACL 2019 • Deng Cai, Yan Wang, Victoria Bi, Zhaopeng Tu, Xiaojiang Liu, Wai Lam, Shuming Shi
Such models rely on insufficient information for generating a specific response since a certain query could be answered in multiple ways.
1 code implementation • EMNLP 2018 • Yi Liao, Lidong Bing, Piji Li, Shuming Shi, Wai Lam, Tong Zhang
For example, an input sequence could be a word sequence, such as review sentence and advertisement text.
1 code implementation • 13 Nov 2018 • Xin Li, Lidong Bing, Piji Li, Wai Lam
Target-based sentiment analysis involves opinion target extraction and target sentiment classification.
Aspect-Based Sentiment Analysis (ABSA) Sentiment Classification
no code implementations • 6 Mar 2019 • Piji Li, ZiHao Wang, Lidong Bing, Wai Lam
In order to exploit the persona information, we propose a framework based on adversarial variational auto-encoders (aVAE) for persona modeling from the historical tips and reviews of users and items.
1 code implementation • NAACL 2019 • Zihao Fu, Yankai Lin, Zhiyuan Liu, Wai Lam
We also propose a novel auto-encoder based facet component to estimate some facets of the fact.
1 code implementation • IJCNLP 2019 • Deng Cai, Wai Lam
The output graph spans the nodes by the distance to the root, following the intuition of first grasping the main ideas then digging into more details.
Ranked #25 on AMR Parsing on LDC2017T10
no code implementations • IJCNLP 2019 • Zihao Wang, Kwun Ping Lai, Piji Li, Lidong Bing, Wai Lam
Therefore, we propose a meta-learning framework that aims at handling infrequent relations with few-shot learning and uncommon entities by using textual descriptions.
1 code implementation • WS 2019 • Xin Li, Lidong Bing, Wenxuan Zhang, Wai Lam
In this paper, we investigate the modeling power of contextualized embeddings from pre-trained language models, e. g. BERT, on the E2E-ABSA task.
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +1
no code implementations • ACL 2020 • Qian Yu, Lidong Bing, Qiong Zhang, Wai Lam, Luo Si
We propose an iterative learning framework for handling this challenge via adaptive transfer and augmentation of the training instances with the help of the available user-posed question-answer data.
1 code implementation • 18 Nov 2019 • Deng Cai, Wai Lam
The dominant graph-to-sequence transduction models employ graph neural networks for graph representation learning, where the structural information is reflected by the receptive field of neurons.
1 code implementation • 22 Nov 2019 • Yang Deng, Wai Lam, Yuexiang Xie, Daoyuan Chen, Yaliang Li, Min Yang, Ying Shen
Community question answering (CQA) gains increasing popularity in both academy and industry recently.
no code implementations • 26 Nov 2019 • Xin Li, Piji Li, Wei Bi, Xiaojiang Liu, Wai Lam
In this paper, we propose to formulate the STC task as a language modeling problem and tailor-make a training strategy to adapt a language model for response generation.
1 code implementation • 13 Mar 2020 • Wenxuan Zhang, Wai Lam, Yang Deng, Jing Ma
In this paper, we propose the Review-guided Answer Helpfulness Prediction (RAHP) model that not only considers the interactions between QA pairs but also investigates the opinion coherence between the answer and crowds' opinions reflected in the reviews, which is another important factor to identify helpful answers.
no code implementations • 7 Apr 2020 • Piji Li, Lidong Bing, Zhongyu Wei, Wai Lam
Different from neural machine translation, in the task of text summarization, salience estimation for words, phrases or sentences is a critical component, since the output summary is a distillation of the input text.
3 code implementations • ACL 2020 • Deng Cai, Wai Lam
We propose a new end-to-end model that treats AMR parsing as a series of dual decisions on the input sequence and the incrementally constructed graph.
Ranked #3 on AMR Parsing on LDC2014T12
no code implementations • 27 Apr 2020 • Iyiola E. Olatunji, Xin Li, Wai Lam
In this paper, we propose a neural deep learning model that predicts the helpfulness score of a review.
no code implementations • 28 Jun 2020 • Wenxuan Zhang, Yang Deng, Wai Lam
In this paper, we investigate the answer ranking problem for product-related questions, with the relevant reviews treated as auxiliary information that can be exploited for facilitating the ranking.
1 code implementation • 14 Jul 2020 • Lun Yiu Nie, Cuiyun Gao, Zhicong Zhong, Wai Lam, Yang Liu, Zenglin Xu
In this paper, we propose a novel Contextualized code representation learning strategy for commit message Generation (CoreGen).
1 code implementation • 27 Aug 2020 • Yang Deng, Wenxuan Zhang, Wai Lam
There are two main challenges when exploiting the opinion information from the reviews to facilitate the opinion-aware answer generation: (i) jointly modeling opinionated and interrelated information between the question and reviews to capture important information for answer generation, (ii) aggregating diverse opinion information to uncover the common opinion towards the given question.
no code implementations • 19 Sep 2020 • Xin Li, Piji Li, Yan Wang, Xiaojiang Liu, Wai Lam
Most of the existing works for dialogue generation are data-driven models trained directly on corpora crawled from websites.
1 code implementation • EMNLP 2020 • Zihao Fu, Bei Shi, Wai Lam, Lidong Bing, Zhiyuan Liu
This kind of data is much easier to obtain since it can be produced automatically.
1 code implementation • EMNLP 2020 • Yang Deng, Wenxuan Zhang, Wai Lam
Question-driven summarization has been recently studied as an effective approach to summarizing the source document to produce concise but informative answers for non-factoid questions.
no code implementations • 23 Oct 2020 • Xin Li, Lidong Bing, Wenxuan Zhang, Zheng Li, Wai Lam
Cross-lingual adaptation with multilingual pre-trained language models (mPTLMs) mainly consists of two lines of works: zero-shot approach and translation-based approach, which have been studied extensively on the sequence-level tasks.
no code implementations • COLING 2020 • Yang Deng, Wenxuan Zhang, Wai Lam
Multi-turn response selection has been extensively studied and applied to many real-world applications in recent years.
no code implementations • COLING 2020 • Zihao Fu, Lidong Bing, Wai Lam, Shoaib Jameel
Recently, many KB-to-text generation tasks have been proposed to bridge the gap between knowledge bases and natural language by directly converting a group of knowledge base triples into human-readable sentences.
no code implementations • Asian Chapter of the Association for Computational Linguistics 2020 • Yifei Yuan, Jingbo Zhou, Wai Lam
Point-of-Interest (POI) oriented question answering (QA) aims to return a list of POIs given a question issued by a user.
no code implementations • Asian Chapter of the Association for Computational Linguistics 2020 • Wenxuan Zhang, Qian Yu, Wai Lam
Providing instant response for product-related questions in E-commerce question answering platforms can greatly improve users{'} online shopping experience.
no code implementations • Asian Chapter of the Association for Computational Linguistics 2020 • Zihao Fu, Bei Shi, Lidong Bing, Wai Lam
In our architecture, we reconstruct KB triples or texts via a closed-loop framework via linking a generator and an extractor.
no code implementations • 21 Dec 2020 • Deng Cai, Yizhe Zhang, Yichen Huang, Wai Lam, Bill Dolan
We propose the task of narrative incoherence detection as a new arena for inter-sentential semantic understanding: Given a multi-sentence narrative, decide whether there exist any semantic discrepancies in the narrative flow.
1 code implementation • 29 Dec 2020 • Zihao Fu, Wai Lam, Anthony Man-Cho So, Bei Shi
The experimental results show that our theoretical framework is applicable in general generation models and our proposed rebalanced encoding approach alleviates the repetition problem significantly.
1 code implementation • 15 Jan 2021 • Mudit Chaudhary, Borislav Dzodzo, Sida Huang, Chun Hei Lo, Mingzhi Lyu, Lun Yiu Nie, Jinbo Xing, Tianhua Zhang, Xiaoying Zhang, Jingyan Zhou, Hong Cheng, Wai Lam, Helen Meng
Dialog systems enriched with external knowledge can handle user queries that are outside the scope of the supporting databases/APIs.
no code implementations • 12 Apr 2021 • Yang Deng, Yuexiang Xie, Yaliang Li, Min Yang, Wai Lam, Ying Shen
Answer selection, which is involved in many natural language processing applications such as dialog systems and question answering (QA), is an important yet challenging task in practice, since conventional methods typically suffer from the issues of ignoring diverse real-world background knowledge.
no code implementations • 20 May 2021 • Yang Deng, Yaliang Li, Fei Sun, Bolin Ding, Wai Lam
However, existing methods mainly target at solving one or two of these three decision-making problems in CRS with separated conversation and recommendation components, which restrict the scalability and generality of CRS and fall short of preserving a stable training procedure.
1 code implementation • ACL 2021 • Deng Cai, Yan Wang, Huayang Li, Wai Lam, Lemao Liu
Second, the memory retriever and NMT model can be jointly optimized for the ultimate translation goal.
1 code implementation • Findings (ACL) 2021 • Weiwen Xu, Huihui Zhang, Deng Cai, Wai Lam
Our framework contains three new ideas: (a) {\tt AMR-SG}, an AMR-based Semantic Graph, constructed by candidate fact AMRs to uncover any hop relations among question, answer and multiple facts.
1 code implementation • 8 Jun 2021 • Yifei Yuan, Wai Lam
We study the task of conversational fashion image retrieval via multiturn natural language feedback.
no code implementations • WNUT (ACL) 2021 • Yang Deng, Wenxuan Zhang, Wai Lam
In this work, we propose a novel and easy-to-apply data augmentation strategy, namely Bilateral Generation (BiG), with a contrastive training objective for improving the performance of ranking question answer pairs with existing labeled data.
1 code implementation • ACL 2021 • Wenxuan Zhang, Xin Li, Yang Deng, Lidong Bing, Wai Lam
Aspect-based sentiment analysis (ABSA) has received increasing attention recently.
Ranked #4 on Aspect Sentiment Triplet Extraction on ASTE-Data-V2
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +2
1 code implementation • RANLP 2021 • Haoran Yang, Wai Lam
In this paper, we propose a new framework that considers sentence structure via a sentence structure graph and word relationship via a word similarity graph.
1 code implementation • Findings (EMNLP) 2021 • Haoran Yang, Wai Lam, Piji Li
Exemplar-Guided Paraphrase Generation (EGPG) aims to generate a target sentence which conforms to the style of the given exemplar while encapsulating the content information of the source sentence.
1 code implementation • Findings (EMNLP) 2021 • Weiwen Xu, Yang Deng, Huihui Zhang, Deng Cai, Wai Lam
We propose a novel Chain Guided Retriever-reader ({\tt CGR}) framework to model the reasoning chain for multi-hop Science Question Answering.
1 code implementation • Findings (EMNLP) 2021 • Deng Cai, Xin Li, Jackie Chun-Sing Ho, Lidong Bing, Wai Lam
We study multilingual AMR parsing from the perspective of knowledge distillation, where the aim is to learn and improve a multilingual AMR parser by using an existing English parser as its teacher.
1 code implementation • EMNLP 2021 • Wenxuan Zhang, Yang Deng, Xin Li, Yifei Yuan, Lidong Bing, Wai Lam
Aspect-based sentiment analysis (ABSA) has been extensively studied in recent years, which typically involves four fundamental sentiment elements, including the aspect category, aspect term, opinion term, and sentiment polarity.
Ranked #3 on Aspect-Based Sentiment Analysis (ABSA) on TASD
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +2
no code implementations • 15 Nov 2021 • Yifei Yuan, Wai Lam
One characteristic of our model is that it extracts fashion attributes and integrates them with the image vision information for effective representation.
no code implementations • 27 Nov 2021 • Hongyuan Lu, Wai Lam, Hong Cheng, Helen M. Meng
We incorporate reinforcement learning with a dedicatedly designed critic network for reward judgement.
1 code implementation • 27 Dec 2021 • Yang Deng, Yaliang Li, Wenxuan Zhang, Bolin Ding, Wai Lam
Recently, Product Question Answering (PQA) on E-Commerce platforms has attracted increasing attention as it can act as an intelligent online shopping assistant and improve the customer shopping experience.
1 code implementation • 7 Feb 2022 • Yang Deng, Wenxuan Zhang, Wai Lam, Hong Cheng, Helen Meng
In this paper, we propose a novel framework, namely USDA, to incorporate the sequential dynamics of dialogue acts for predicting user satisfaction, by jointly learning User Satisfaction Estimation and Dialogue Act Recognition tasks.
no code implementations • 28 Feb 2022 • Weiwen Xu, Bowei Zou, Wai Lam, Ai Ti Aw
Recent techniques in Question Answering (QA) have gained remarkable performance improvement with some QA models even surpassed human performance.
1 code implementation • 2 Mar 2022 • Wenxuan Zhang, Xin Li, Yang Deng, Lidong Bing, Wai Lam
More specifically, we provide a new taxonomy for ABSA which organizes existing studies from the axes of concerned sentiment elements, with an emphasis on recent advances of compound ABSA tasks.
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA)
no code implementations • 10 Apr 2022 • Haoran Yang, Piji Li, Wai Lam
Continuous prompt tuning which prepends a few trainable vectors to the embeddings of input is one of these methods and has drawn much attention due to its effectiveness and efficiency.
1 code implementation • 14 Apr 2022 • Yang Deng, Wenxuan Zhang, Weiwen Xu, Wenqiang Lei, Tat-Seng Chua, Wai Lam
In this work, we propose a novel Unified MultI-goal conversational recommeNDer system, namely UniMIND.
1 code implementation • ACL 2022 • Chang Gao, Wenxuan Zhang, Wai Lam
The goal-oriented document-grounded dialogue aims at responding to the user query based on the dialogue context and supporting document.
1 code implementation • 17 Aug 2022 • Hongyuan Lu, Wai Lam
This paper presents \textbf{PCC}: \textbf{P}araphrasing with Bottom-k Sampling and \textbf{C}yclic Learning for \textbf{C}urriculum Data Augmentation, a novel CDA framework via paraphrasing, which exploits the textual paraphrase similarity as the curriculum difficulty measure.
no code implementations • 26 Sep 2022 • Zihao Fu, Yijiang River Dong, Lidong Bing, Wai Lam
As the development of the encoder-decoder architecture, researchers are able to study the text generation tasks with broader types of data.
no code implementations • 28 Sep 2022 • Hongyuan Lu, Haoyang Huang, Shuming Ma, Dongdong Zhang, Furu Wei, Wai Lam
Despite the fact that multilingual agreement (MA) has shown its importance for multilingual neural machine translation (MNMT), current methodologies in the field have two shortages: (i) require parallel data between multiple language pairs, which is not always realistic and (ii) optimize the agreement in an ambiguous direction, which hampers the translation performance.
1 code implementation • 17 Oct 2022 • Weiwen Xu, Yang Deng, Wenqiang Lei, Wenlong Zhao, Tat-Seng Chua, Wai Lam
We study automatic Contract Clause Extraction (CCE) by modeling implicit relations in legal contracts.
1 code implementation • 17 Oct 2022 • Yang Deng, Wenqiang Lei, Wenxuan Zhang, Wai Lam, Tat-Seng Chua
To facilitate conversational question answering (CQA) over hybrid contexts in finance, we present a new dataset, named PACIFIC.
1 code implementation • 17 Oct 2022 • Weiwen Xu, Xin Li, Yang Deng, Wai Lam, Lidong Bing
Specifically, a novel Peer Data Augmentation (PeerDA) approach is proposed which employs span pairs with the PR relation as the augmentation data for training.
1 code implementation • 18 Oct 2022 • Deng Cai, Xin Li, Jackie Chun-Sing Ho, Lidong Bing, Wai Lam
Unlike most prior work that only evaluates the ability to measure semantic similarity, we present a thorough evaluation of existing multilingual sentence embeddings and our improved versions, which include a collection of five transfer tasks in different downstream applications.
1 code implementation • 23 Oct 2022 • Yifei Yuan, Chen Shi, Runze Wang, Liyi Chen, Feijun Jiang, Yuan You, Wai Lam
In this paper, we propose the task of multimodal conversational query rewrite (McQR), which performs query rewrite under the multimodal visual conversation setting.
1 code implementation • 23 Oct 2022 • Chang Gao, Bowen Li, Wenxuan Zhang, Wai Lam, Binhua Li, Fei Huang, Luo Si, Yongbin Li
Text-to-SQL parsing tackles the problem of mapping natural language questions to executable SQL queries.
1 code implementation • 28 Nov 2022 • Zihao Fu, Haoran Yang, Anthony Man-Cho So, Wai Lam, Lidong Bing, Nigel Collier
How to choose the tunable parameters?
1 code implementation • 9 Dec 2022 • Weiwen Xu, Xin Li, Wenxuan Zhang, Meng Zhou, Wai Lam, Luo Si, Lidong Bing
We present Pre-trained Machine Reader (PMR), a novel method for retrofitting pre-trained masked language models (MLMs) to pre-trained machine reading comprehension (MRC) models without acquiring labeled data.
no code implementations • 15 Dec 2022 • Hongyuan Lu, Haoyang Huang, Shuming Ma, Dongdong Zhang, Wai Lam, Furu Wei
Despite the success of multilingual sequence-to-sequence pre-training, most existing approaches rely on document-level monolingual corpora in many different languages, sentence-level bilingual corpora,\footnote{In this paper, we use `bilingual corpora' to denote parallel corpora with `bilingual translation pairs' in many different language pairs, each consisting of two sentences/documents with the same meaning written in different languages.
Abstractive Text Summarization Cross-Lingual Abstractive Summarization +4
no code implementations • 16 Feb 2023 • Yang Deng, Wenxuan Zhang, Qian Yu, Wai Lam
Product question answering (PQA), aiming to automatically provide instant responses to customer's questions in E-Commerce platforms, has drawn increasing attention in recent years.
no code implementations • 8 Apr 2023 • Zihao Fu, Wai Lam, Qian Yu, Anthony Man-Cho So, Shengding Hu, Zhiyuan Liu, Nigel Collier
Grounded on our analysis, we propose a novel partial attention language model to solve the attention degeneration problem.
no code implementations • 4 May 2023 • Yang Deng, Wenqiang Lei, Wai Lam, Tat-Seng Chua
Proactive dialogue systems, related to a wide range of real-world conversational applications, equip the conversational agent with the capability of leading the conversation direction towards achieving pre-defined targets or fulfilling certain goals from the system side.
no code implementations • 11 May 2023 • Hongyuan Lu, Haoyang Huang, Dongdong Zhang, Haoran Yang, Wai Lam, Furu Wei
Large language models (LLMs) have shown surprisingly good performance in multilingual neural machine translation (MNMT) even when trained without parallel data.
1 code implementation • 16 May 2023 • Chaojun Wang, Yang Liu, Wai Lam
Furthermore, we introduce a full-permutation multi-task learning to alleviate the spurious causal relations from intermediate sequences to the target, which results from exposure bias.
1 code implementation • 16 May 2023 • Chang Gao, Wenxuan Zhang, Wai Lam, Lidong Bing
Information extraction (IE) systems aim to automatically extract structured information, such as named entities, relations between entities, and events, from unstructured texts.
1 code implementation • 17 May 2023 • Yang Deng, Wenxuan Zhang, Yifei Yuan, Wai Lam
Unlike empathetic dialogues, the system in emotional support conversations (ESC) is expected to not only convey empathy for comforting the help-seeker, but also proactively assist in exploring and addressing their problems during the conversation.
1 code implementation • 17 May 2023 • Hanxu Hu, Hongyuan Lu, Huajian Zhang, Yun-Ze Song, Wai Lam, Yue Zhang
To this end, we propose a novel method called CoS (Chain-of-Symbol Prompting) that represents the complex environments with condensed symbolic spatial representations during the chained intermediate thinking steps.
1 code implementation • 22 May 2023 • Haoran Yang, Deng Cai, Huayang Li, Wei Bi, Wai Lam, Shuming Shi
We introduce a frustratingly simple, super efficient and surprisingly effective decoding method, which we call Frustratingly Simple Decoding (FSD), for neural text generation.
1 code implementation • 23 May 2023 • Weiwen Xu, Xin Li, Wai Lam, Lidong Bing
mPMR aims to guide multilingual pre-trained language models (mPLMs) to perform natural language understanding (NLU) including both sequence classification and span extraction in multiple languages.
1 code implementation • 25 May 2023 • Yuejiao Fei, Leyang Cui, Sen yang, Wai Lam, Zhenzhong Lan, Shuming Shi
Grammatical error correction systems improve written communication by detecting and correcting language mistakes.
no code implementations • 3 Jun 2023 • Xiaoyan Zhao, Yang Deng, Min Yang, Lingzhi Wang, Rui Zhang, Hong Cheng, Wai Lam, Ying Shen, Ruifeng Xu
This survey is expected to facilitate researchers' collaborative efforts to tackle the challenges of real-life RE systems.
no code implementations • 9 Sep 2023 • Hongyuan Lu, Wai Lam
This is well motivated as augmenting data via paraphrasing effectively improves neural language models.
no code implementations • 15 Sep 2023 • Chun Hei Lo, Wai Lam, Hong Cheng, Guy Emerson
Functional Distributional Semantics (FDS) models the meaning of words by truth-conditional functions.
no code implementations • 28 Sep 2023 • Yifei Yuan, Wenxuan Zhang, Yang Deng, Wai Lam
Existing work on fashion knowledge extraction in social media is classification-based and requires to manually determine a set of fashion knowledge categories in advance.
1 code implementation • 4 Oct 2023 • Chang Gao, Wenxuan Zhang, Guizhen Chen, Wai Lam
Instruction tuning has emerged as a crucial process for harnessing the capabilities of large language models (LLMs) by providing explicit task instructions, leading to improved performance in various tasks.
1 code implementation • 19 Oct 2023 • Shuaiyi Li, Yang Deng, Wai Lam
Specifically, we design a novel node memory scheme and aggregate the information over the depth dimension instead of the breadth dimension of the graph, which empowers the ability to collect long dependencies without stacking multiple layers.
1 code implementation • 23 Oct 2023 • Sen yang, Xin Li, Lidong Bing, Wai Lam
However, the knowledge-time association is usually insufficient for the downstream tasks that require reasoning over temporal dependencies between knowledge.
1 code implementation • 1 Nov 2023 • Yang Deng, Wenxuan Zhang, Wai Lam, See-Kiong Ng, Tat-Seng Chua
Proactive dialogues serve as a practical yet challenging dialogue problem in the era of large language models (LLMs), where the dialogue policy planning is the key to improving the proactivity of LLMs.
no code implementations • 15 Nov 2023 • Chang Gao, Haiyun Jiang, Deng Cai, Shuming Shi, Wai Lam
Most existing chain-of-thought (CoT) prompting methods suffer from the issues of generalizability and consistency, as they often rely on instance-specific solutions that may not be applicable to other cases and lack task-level consistency in their reasoning steps.
1 code implementation • 16 Nov 2023 • Sen yang, Xin Li, Leyang Cui, Lidong Bing, Wai Lam
Though prompting LLMs with various reasoning structures produces reasoning proofs along with answers, these proofs are not ensured to be causal and reliable due to the inherent defects of LLMs.
1 code implementation • 22 Dec 2023 • Weiwen Xu, Deng Cai, Zhisong Zhang, Wai Lam, Shuming Shi
As humans, we consistently engage in interactions with our peers and receive feedback in the form of natural language.
no code implementations • 10 Feb 2024 • Chufan Shi, Haoran Yang, Deng Cai, Zhisong Zhang, Yifan Wang, Yujiu Yang, Wai Lam
Decoding methods play an indispensable role in converting language models from next-token predictors into practical task solvers.
no code implementations • 12 Feb 2024 • Yifei Yuan, Clemencia Siro, Mohammad Aliannejadi, Maarten de Rijke, Wai Lam
Therefore, we propose to add images to clarifying questions and formulate the novel task of asking multimodal clarifying questions in open-domain, mixed-initiative conversational search systems.
no code implementations • 20 Feb 2024 • Haoran Li, Qingxiu Dong, Zhengyang Tang, Chaojun Wang, Xingxing Zhang, Haoyang Huang, Shaohan Huang, Xiaolong Huang, Zeqiang Huang, Dongdong Zhang, Yuxian Gu, Xin Cheng, Xun Wang, Si-Qing Chen, Li Dong, Wei Lu, Zhifang Sui, Benyou Wang, Wai Lam, Furu Wei
We introduce Generalized Instruction Tuning (called GLAN), a general and scalable method for instruction tuning of Large Language Models (LLMs).
no code implementations • 8 Mar 2024 • Shuaiyi Li, Yang Deng, Deng Cai, Hongyuan Lu, Liang Chen, Wai Lam
As the typical retraining paradigm is unacceptably time- and resource-consuming, researchers are turning to model editing in order to seek an effective, consecutive, and batch-supportive way to edit the model behavior directly.
no code implementations • 12 Mar 2024 • Qibing Ren, Chang Gao, Jing Shao, Junchi Yan, Xin Tan, Yu Qiao, Wai Lam, Lizhuang Ma
The rapid advancement of Large Language Models (LLMs) has brought about remarkable generative capabilities but also raised concerns about their potential misuse.
1 code implementation • 14 Mar 2024 • Haoran Yang, Yumeng Zhang, Jiaqi Xu, Hongyuan Lu, Pheng Ann Heng, Wai Lam
While Large Language Models (LLMs) have demonstrated exceptional multitasking abilities, fine-tuning these models on downstream, domain-specific datasets is often necessary to yield superior performance on test sets compared to their counterparts without fine-tuning.
no code implementations • 18 Mar 2024 • Yifei Yuan, Chen Shi, Runze Wang, Liyi Chen, Renjun Hu, Zengming Zhang, Feijun Jiang, Wai Lam
To this end, we study low-resource generative conversational query rewrite that is robust to both noise and language style shift.
no code implementations • 9 Apr 2024 • Junpeng Liu, YiFan Song, Bill Yuchen Lin, Wai Lam, Graham Neubig, Yuanzhi Li, Xiang Yue
Multimodal Large Language models (MLLMs) have shown promise in web-related tasks, but evaluating their performance in the web domain remains a challenge due to the lack of comprehensive benchmarks.
1 code implementation • ACL 2022 • Chun Hei Lo, Wai Lam, Hong Cheng
We introduce a data-driven approach to generating derivation trees from meaning representation graphs with probabilistic synchronous hyperedge replacement grammar (PSHRG).
no code implementations • NAACL 2022 • Hongyuan Lu, Wai Lam, Hong Cheng, Helen Meng
Incorporating personas information allows diverse and engaging responses in dialogue response generation.
no code implementations • RANLP 2021 • Xin Shen, Wai Lam
Our method forces the network to learn the necessary features for all the words in the input, which alleviates the shortcut learning problem.
no code implementations • Findings (ACL) 2022 • Hongyuan Lu, Wai Lam, Hong Cheng, Helen Meng
We propose a novel framework that automatically generates a control token with the generator to bias the succeeding response towards informativeness for answerable contexts and fallback for unanswerable contexts in an end-to-end manner.
1 code implementation • EMNLP 2021 • Wenxuan Zhang, Ruidan He, Haiyun Peng, Lidong Bing, Wai Lam
Many efforts have been made in solving the Aspect-based sentiment analysis (ABSA) task.
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +1
1 code implementation • Findings (EMNLP) 2021 • Wenxuan Zhang, Yang Deng, Xin Li, Lidong Bing, Wai Lam
This motivates us to investigate the task of ABSA on QA forums (ABSA-QA), aiming to jointly detect the discussed aspects and their sentiment polarities for a given QA pair.
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +2
no code implementations • EMNLP 2020 • Wenxuan Zhang, Yang Deng, Jing Ma, Wai Lam
Product-related question answering platforms nowadays are widely employed in many E-commerce sites, providing a convenient way for potential customers to address their concerns during online shopping.