no code implementations • ACL 2022 • Yubo Ma, Zehao Wang, Mukai Li, Yixin Cao, Meiqi Chen, Xinze Li, Wenqi Sun, Kunquan Deng, Kun Wang, Aixin Sun, Jing Shao
Events are fundamental building blocks of real-world happenings.
no code implementations • 5 Sep 2024 • Xin Jiang, Xiang Li, Wenjia Ma, Xuezhi Fang, Yiqun Yao, Naitong Yu, Xuying Meng, Peng Han, Jing Li, Aixin Sun, Yequan Wang
Sketch comprises the following components: (1) a suite of task description schemas and prompt templates encompassing various NLP tasks; (2) a user-friendly, interactive process for building structured output LLM services tailored to various NLP tasks; (3) an open-source dataset for output format control, along with tools for dataset construction; and (4) an open-source model based on LLaMA3-8B-Instruct that adeptly comprehends and adheres to output formatting instructions.
no code implementations • 30 Aug 2024 • Lulu Dong, Guoxiu He, Aixin Sun
Our analysis, based on a causal graph modeling short-video recommendation, suggests that the release interval serves as a confounder, establishing a backdoor path between users and videos.
1 code implementation • 8 Aug 2024 • Yiqun Yao, Wenjia Ma, Xuezhi Fang, Xin Jiang, Xiang Li, Xuying Meng, Peng Han, Jing Li, Aixin Sun, Yequan Wang
Controlling the format of outputs generated by large language models (LLMs) is a critical functionality in various applications.
no code implementations • 6 Aug 2024 • Xin Zhou, Aixin Sun, Jie Zhang, Donghui Lin
The increasing availability of learning activity data in Massive Open Online Courses (MOOCs) enables us to conduct a large-scale analysis of learners' learning behavior.
1 code implementation • 9 Jul 2024 • Renjie Liang, Li Li, Chongzhi Zhang, Jing Wang, Xizhou Zhu, Aixin Sun
To facilitate research in RVMR, we develop the TVR-Ranking dataset, based on the raw videos and existing moment annotations provided in the TVR dataset.
no code implementations • 3 Jul 2024 • Xiang Li, Yiqun Yao, Xin Jiang, Xuezhi Fang, Chao Wang, Xinzhang Liu, Zihan Wang, Yu Zhao, Xin Wang, Yuyao Huang, Shuangyong Song, Yongxiang Li, Zheng Zhang, Bo Zhao, Aixin Sun, Yequan Wang, Zhongjiang He, Zhongyuan Wang, Xuelong Li, Tiejun Huang
Large Language Models (LLMs) represent a significant stride toward Artificial General Intelligence.
no code implementations • 1 Jul 2024 • Yubo Ma, Yuhang Zang, Liangyu Chen, Meiqi Chen, Yizhu Jiao, Xinze Li, Xinyuan Lu, Ziyu Liu, Yan Ma, Xiaoyi Dong, Pan Zhang, Liangming Pan, Yu-Gang Jiang, Jiaqi Wang, Yixin Cao, Aixin Sun
Moreover, 33. 2% of the questions are cross-page questions requiring evidence across multiple pages.
no code implementations • 25 Apr 2024 • Xiang Li, Yiqun Yao, Xin Jiang, Xuezhi Fang, Chao Wang, Xinzhang Liu, Zihan Wang, Yu Zhao, Xin Wang, Yuyao Huang, Shuangyong Song, Yongxiang Li, Zheng Zhang, Bo Zhao, Aixin Sun, Yequan Wang, Zhongjiang He, Zhongyuan Wang, Xuelong Li, Tiejun Huang
Large language models (LLMs) have showcased profound capabilities in language understanding and generation, facilitating a wide array of applications.
no code implementations • 20 Apr 2024 • Aixin Sun
That is, we often conceptualize RecSys as the task of predicting missing values in a static user-item interaction matrix, rather than predicting a user's decision on the next interaction within a dynamic, changing, and application-specific context.
no code implementations • 4 Mar 2024 • Siqi Fan, Xin Jiang, Xiang Li, Xuying Meng, Peng Han, Shuo Shang, Aixin Sun, Yequan Wang, Zhongyuan Wang
That is, not all layers of LLMs are necessary during inference.
no code implementations • 22 Feb 2024 • Jiayu Li, Aixin Sun, Weizhi Ma, Peijie Sun, Min Zhang
This paper emphasizes the importance of dedicated analyses and methods for domain-specific characteristics for the recommender system studies.
no code implementations • 18 Feb 2024 • Yubo Ma, Zhibin Gou, Junheng Hao, Ruochen Xu, Shuohang Wang, Liangming Pan, Yujiu Yang, Yixin Cao, Aixin Sun, Hany Awadalla, Weizhu Chen
To make this task more practical and solvable for LLMs, we introduce a new task setting named tool-augmented scientific reasoning.
1 code implementation • 25 Jan 2024 • Mathieu Ravaut, Hao Zhang, Lu Xu, Aixin Sun, Yong liu
Conversational recommender systems (CRS) aim to recommend relevant items to users by eliciting user preference through natural language conversation.
no code implementations • 16 Jan 2024 • Chongzhi Zhang, Mingyuan Zhang, Zhiyang Teng, Jiayi Li, Xizhou Zhu, Lewei Lu, Ziwei Liu, Aixin Sun
Our method involves the direct generation of a global 2D temporal map via a conditional denoising diffusion process, based on the input video and language query.
1 code implementation • 16 Oct 2023 • Mathieu Ravaut, Aixin Sun, Nancy F. Chen, Shafiq Joty
In this paper, we conduct the first comprehensive study on context utilization and position bias in summarization.
no code implementations • 9 Oct 2023 • Xinze Li, Yixin Cao, Liangming Pan, Yubo Ma, Aixin Sun
Although achieving great success, Large Language Models (LLMs) usually suffer from unreliable hallucinations.
1 code implementation • 13 Sep 2023 • Yu Cheng, Yunzhu Pan, JiaQi Zhang, Yongxin Ni, Aixin Sun, Fajie Yuan
Then, to show the effectiveness of the dataset's image features, we substitute the itemID embeddings (from IDNet) with a powerful vision encoder that represents items using their raw image pixels.
Ranked #1 on Recommendation Systems on PixelRec
no code implementations • 7 Sep 2023 • Xiang Li, Yiqun Yao, Xin Jiang, Xuezhi Fang, Xuying Meng, Siqi Fan, Peng Han, Jing Li, Li Du, Bowen Qin, Zheng Zhang, Aixin Sun, Yequan Wang
We demonstrate that a 101B-parameter LLM with 0. 31T tokens can be trained with a budget of 100K US dollars.
1 code implementation • 19 Jul 2023 • Yu-chen Fan, Yitong Ji, Jie Zhang, Aixin Sun
First, there are significant differences in user interactions at the different stages when a user interacts with the MovieLens platform.
2 code implementations • 4 Jul 2023 • Chen Chen, YuFei Wang, Aixin Sun, Bing Li, Kwok-Yan Lam
However, the fine-tuned PLMs often overwhelmingly focus on the textual information and overlook structural knowledge.
1 code implementation • 30 May 2023 • Jing Wang, Aixin Sun, Hao Zhang, XiaoLi Li
Given a query, the task of Natural Language Video Localization (NLVL) is to localize a temporal moment in an untrimmed video that semantically matches the query.
1 code implementation • 18 May 2023 • Xinze Li, Yixin Cao, Muhao Chen, Aixin Sun
Goal-oriented Script Generation is a new task of generating a list of steps that can fulfill the given goal.
1 code implementation • 7 May 2023 • Kuicai Dong, Aixin Sun, Jung-jae Kim, XiaoLi Li
We formally define the research problem of tuple-level speculation detection and conduct a detailed data analysis on the LSOIE dataset which contains labels for speculative tuples.
1 code implementation • 5 May 2023 • Kuicai Dong, Aixin Sun, Jung-jae Kim, XiaoLi Li
Accordingly, we propose a simple BERT-based model for sentence chunking, and propose Chunk-OIE for tuple extraction on top of SaC.
no code implementations • 5 May 2023 • Yitong Ji, Aixin Sun, Jie Zhang
Then we blend the historical and new preferences in the form of node embeddings in the new graph, through a Disentanglement Module.
1 code implementation • 3 May 2023 • Yubo Ma, Zehao Wang, Yixin Cao, Aixin Sun
Few-shot event detection (ED) has been widely studied, while this brings noticeable discrepancies, e. g., various motivations, tasks, and experimental settings, that hinder the understanding of models for future progress. This paper presents a thorough empirical study, a unified view of ED models, and a better unified baseline.
no code implementations • 2 May 2023 • Xiang Li, Xin Jiang, Xuying Meng, Aixin Sun, Yequan Wang
FreeLM outperforms large models e. g., GPT-3 and InstructGPT, on a range of language understanding tasks in experiments.
1 code implementation • 14 Apr 2023 • Yiqun Yao, Siqi Fan, Xiusheng Huang, Xuezhi Fang, Xiang Li, Ziyi Ni, Xin Jiang, Xuying Meng, Peng Han, Shuo Shang, Kang Liu, Aixin Sun, Yequan Wang
With around 14% of the one-time pre-training cost, we can accurately forecast the loss for models up to 52B.
1 code implementation • 3 Apr 2023 • Zihao Li, Aixin Sun, Chenliang Li
Mainstream solutions to Sequential Recommendation (SR) represent items with fixed vectors.
no code implementations • 15 Mar 2023 • Yequan Wang, Hengran Zhang, Aixin Sun, Xuying Meng
Given comparative text, comparative relation extraction aims to extract two targets (\eg two cameras) in comparison and the aspect they are compared for (\eg image quality).
1 code implementation • 15 Mar 2023 • Yubo Ma, Yixin Cao, YongChing Hong, Aixin Sun
Large Language Models (LLMs) have made remarkable strides in various tasks.
no code implementations • 6 Dec 2022 • Mengying Yu, Aixin Sun
The differences in these datasets can be attributed to the different information needs of the specific research tasks.
1 code implementation • 5 Dec 2022 • Kuicai Dong, Aixin Sun, Jung-jae Kim, XiaoLi Li
In this paper, we model both constituency and dependency trees into word-level graphs, and enable neural OpenIE to learn from the syntactic structures.
Ranked #1 on Open Information Extraction on LSOIE-wiki
no code implementations • 12 Oct 2022 • Yequan Wang, Jiawen Deng, Aixin Sun, Xuying Meng
Recently, amounts of works utilize perplexity~(PPL) to evaluate the quality of the generated text.
no code implementations • 9 Oct 2022 • Aixin Sun
We then move on to explore the two implications of neglecting a global timeline during evaluation: data leakage and oversimplification of user preference modeling.
1 code implementation • COLING 2022 • Yequan Wang, Xiang Li, Aixin Sun, Xuying Meng, Huaming Liao, Jiafeng Guo
CofeNet is able to extract complicated quotations with components of variable lengths and complicated structures.
no code implementations • 28 May 2022 • Xinyu Zou, Zhi Hu, Yiming Zhao, Xuchu Ding, Zhongyi Liu, Chenliang Li, Aixin Sun
At each multi-scenario/multi-task layer, a novel expert selection algorithm is proposed to automatically identify scenario-/task-specific and shared experts for each input.
no code implementations • 24 May 2022 • Shaowen Zhou, Bowen Yu, Aixin Sun, Cheng Long, Jingyang Li, Haiyang Yu, Jian Sun, Yongbin Li
Open Information Extraction (OpenIE) facilitates domain-independent discovery of relational facts from large corpora.
Ranked #1 on Open Information Extraction on CaRB
Natural Language Understanding Open-Domain Question Answering +1
no code implementations • 21 May 2022 • Fuzhao Xue, Jianghai Chen, Aixin Sun, Xiaozhe Ren, Zangwei Zheng, Xiaoxin He, Yongming Chen, Xin Jiang, Yang You
In this paper, we revisit these conventional configurations.
Ranked #103 on Image Classification on ImageNet
1 code implementation • 12 Apr 2022 • Yitong Ji, Aixin Sun, Jie Zhang, Chenliang Li
Our study offers a different perspective to understand recommender accuracy, and our findings could trigger a revisit of recommender model design.
no code implementations • 23 Mar 2022 • Yequan Wang, Xuying Meng, Yiyi Liu, Aixin Sun, Yao Wang, Yinhe Zheng, Minlie Huang
These models hence are not optimized for dialog-level emotion detection, i. e. to predict the emotion category of a dialog as a whole.
no code implementations • 5 Feb 2022 • Ting Lin, Aixin Sun, Yequan Wang
A sentence may express sentiments on multiple aspects.
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +1
no code implementations • 20 Jan 2022 • Hao Zhang, Aixin Sun, Wei Jing, Joey Tianyi Zhou
Temporal sentence grounding in videos (TSGV), \aka natural language video localization (NLVL) or video moment retrieval (VMR), aims to retrieve a temporal moment that semantically corresponds to a language query from an untrimmed video.
no code implementations • 14 Jan 2022 • Grace E. Lee, Aixin Sun
This practice, known as screening prioritization (ie., document ranking approach), speeds up the process of conducting a SR as the documents labelled as relevant can move to the next tasks earlier.
no code implementations • 28 Dec 2021 • Grace E. Lee, Aixin Sun
Alternatively, we formulate the SDR task as finding similar documents to a query document and produce rankings based on similarity scores.
no code implementations • 8 Nov 2021 • Hao Zhang, Aixin Sun, Wei Jing, Joey Tianyi Zhou
In this paper, we propose two debiasing strategies, data debiasing and model debiasing, to "force" a TSGV model to capture cross-modal interactions.
1 code implementation • Findings (NAACL) 2022 • Yiyi Liu, Yequan Wang, Aixin Sun, Xuying Meng, Jing Li, Jiafeng Guo
Based on this dual-channel framework, we design the Dual-Channel Network~(DC-Net) to recognize sentiment conflict.
2 code implementations • 7 Jul 2021 • Xin Zhou, Aixin Sun, Yong liu, Jie Zhang, Chunyan Miao
Collaborative filtering (CF) is widely used to learn informative latent representations of users and items from observed interactions.
no code implementations • Findings (ACL) 2021 • Hao Zhang, Aixin Sun, Wei Jing, Liangli Zhen, Joey Tianyi Zhou, Rick Siow Mong Goh
In this work, we propose a Parallel Attention Network with Sequence matching (SeqPAN) to address the challenges in this task: multi-modal representation learning, and target moment boundary prediction.
1 code implementation • 13 May 2021 • Hao Zhang, Aixin Sun, Wei Jing, Guoshun Nan, Liangli Zhen, Joey Tianyi Zhou, Rick Siow Mong Goh
We adopt the first approach and introduce two contrastive learning objectives to refine video encoder and text encoder to learn video and text representations separately but with better alignment for VCMR.
1 code implementation • Findings (ACL) 2021 • Kuicai Dong, Yilin Zhao, Aixin Sun, Jung-jae Kim, XiaoLi Li
Both DocOIE dataset and DocIE model are released for public.
Ranked #1 on Open Information Extraction on DocOIE-transportation
no code implementations • 3 May 2021 • Xiaocong Chen, Lina Yao, Xianzhi Wang, Aixin Sun, Wenjie Zhang, Quan Z. Sheng
Recent advances in reinforcement learning have inspired increasing interest in learning user modeling adaptively through dynamic interactions, e. g., in reinforcement learning based recommender systems.
no code implementations • 26 Feb 2021 • Hao Zhang, Aixin Sun, Wei Jing, Liangli Zhen, Joey Tianyi Zhou, Rick Siow Mong Goh
Our study suggests that the span-based QA framework is an effective strategy to solve the NLVL problem.
1 code implementation • 27 Dec 2020 • Fuzhao Xue, Aixin Sun, Hao Zhang, Jinjie Ni, Eng Siong Chng
Dialogue relation extraction (RE) is to predict the relation type of two entities mentioned in a dialogue.
Ranked #9 on Dialog Relation Extraction on DialogRE
1 code implementation • 12 Dec 2020 • Fuzhao Xue, Aixin Sun, Hao Zhang, Eng Siong Chng
Recent advances on RE task are from BERT-based sequence modeling and graph-based modeling of relationships among the tokens in the sequence.
Ranked #4 on Dialog Relation Extraction on DialogRE (F1c (v1) metric)
no code implementations • 4 Nov 2020 • Xiaocong Chen, Lina Yao, Aixin Sun, Xianzhi Wang, Xiwei Xu, Liming Zhu
Deep reinforcement learning uses a reward function to learn user's interest and to control the learning process.
no code implementations • 23 Oct 2020 • Yong liu, Susen Yang, Chenyi Lei, Guoxin Wang, Haihong Tang, Juyong Zhang, Aixin Sun, Chunyan Miao
Side information of items, e. g., images and text description, has shown to be effective in contributing to accurate recommendations.
1 code implementation • 21 Oct 2020 • Yitong Ji, Aixin Sun, Jie Zhang, Chenliang Li
To evaluate recommendation systems in a realistic manner in offline setting, we propose a timeline scheme, which calls for a revisit of the recommendation model design.
1 code implementation • 28 May 2020 • Yitong Ji, Aixin Sun, Jie Zhang, Chenliang Li
On the widely used MovieLens dataset, we show that the performance of popularity could be significantly improved by 70% or more, if we consider the popular items at the time point when a user interacts with the system.
1 code implementation • 21 May 2020 • Cheng Zhao, Chenliang Li, Rong Xiao, Hongbo Deng, Aixin Sun
Given two relevant domains (e. g., Book and Movie), users may have interactions with items in one domain but not in the other domain.
1 code implementation • ACL 2020 • Hao Zhang, Aixin Sun, Wei Jing, Joey Tianyi Zhou
Given an untrimmed video and a text query, natural language video localization (NLVL) is to locate a matching span from the video that semantically corresponds to the query.
2 code implementations • 14 Apr 2020 • Keke Huang, Jing Tang, Kai Han, Xiaokui Xiao, Wei Chen, Aixin Sun, Xueyan Tang, Andrew Lim
In this paper, we propose the first practical algorithm for the adaptive IM problem that could provide the worst-case approximation guarantee of $1-\mathrm{e}^{\rho_b(\varepsilon-1)}$, where $\rho_b=1-(1-1/b)^b$ and $\varepsilon \in (0, 1)$ is a user-specified parameter.
Social and Information Networks
no code implementations • 2 Mar 2020 • Jianglei Han, Jing Li, Aixin Sun
In short, our results demonstrate that the UFTR is a superior solution to the ticket routing problem because it takes into account previously unexploited interrelationships between the group assignment and group transfer problems.
no code implementations • 31 Dec 2019 • Jialong Han, Aixin Sun, Haisong Zhang, Chenliang Li, Shuming Shi
In this study, we demonstrate that annotations for this task can be harvested at scale from existing corpora, in a fully automatic manner.
no code implementations • IJCNLP 2019 • Xin Zheng, Aixin Sun, Jing Li, Karthik Muthuswamy
In multi-document summarization, a set of documents to be summarized is assumed to be on the same topic, known as the underlying topic in this paper.
no code implementations • ACL 2019 • Minh C. Phan, Aixin Sun, Yi Tay
Moreover, our proposed method is also able to compute meaningful representations for unseen names, resulting in high practical utility in real-world applications.
1 code implementation • ACL 2019 • Chujie Zheng, Minlie Huang, Aixin Sun
Cloze-style reading comprehension in Chinese is still limited due to the lack of various corpora.
4 code implementations • 25 May 2019 • Shuai Zhang, Yi Tay, Lina Yao, Bin Wu, Aixin Sun
In this toolkit, we have implemented a number of deep learning based recommendation algorithms using Python and the widely used deep learning package - Tensorflow.
1 code implementation • 9 May 2019 • Jiaxin Pei, Aixin Sun, Chenliang Li
Targeted sentiment analysis (TSA), also known as aspect based sentiment analysis (ABSA), aims at detecting fine-grained sentiment polarity towards targets in a given opinion document.
Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA)
no code implementations • 21 Apr 2019 • Grace E. Lee, Aixin Sun
Based on the analysis, we report two observations: (i) Boundaries of PICO span annotations by individual human annotators are very diverse.
no code implementations • 21 Apr 2019 • Grace E. Lee, Aixin Sun
In this work, we conduct a detailed analysis on the stability of concept embeddings in medical domain, particularly the relation with concept frequency.
no code implementations • 22 Dec 2018 • Chenliang Li, Yu Duan, Haoran Wang, Zhiqian Zhang, Aixin Sun, Zongyang Ma
Recent studies show that the Dirichlet Multinomial Mixture (DMM) model is effective for topic inference over short texts by assuming that each piece of short text is generated by a single topic.
1 code implementation • 22 Dec 2018 • Jing Li, Aixin Sun, Jianglei Han, Chenliang Li
In this paper, we provide a comprehensive review on existing deep learning techniques for NER.
no code implementations • 20 Aug 2018 • Shuai Zhang, Yi Tay, Lina Yao, Aixin Sun
In this paper, we propose a novel sequence-aware recommendation model.
no code implementations • 8 May 2018 • Shuai Zhang, Lina Yao, Aixin Sun, Sen Wang, Guodong Long, Manqing Dong
Modeling user-item interaction patterns is an important task for personalized recommendations.
no code implementations • 4 Feb 2018 • Minh C. Phan, Aixin Sun, Yi Tay, Jialong Han, Chenliang Li
For the first time, we show that the semantic relationships between the mentioned entities are in fact less dense than expected.
1 code implementation • The Web Conference (WWW) 2018 • Yequan Wang, Aixin Sun, Jialong Han, Ying Liu, Xiaoyan Zhu
Based on capsule representation, the probability module computes the capsule’s state probability.
Ranked #6 on Sentiment Analysis on MR
8 code implementations • 24 Jul 2017 • Shuai Zhang, Lina Yao, Aixin Sun, Yi Tay
This article aims to provide a comprehensive review of recent research efforts on deep learning based recommender systems.
1 code implementation • ACL 2017 • Xiaoshi Zhong, Aixin Sun, Erik Cambria
Extracting time expressions from free text is a fundamental task for many applications.
no code implementations • 9 May 2017 • Xin Zheng, Jialong Han, Aixin Sun
Specifically, we concentrate on the prediction of user home locations, tweet locations, and mentioned locations.
no code implementations • 15 Apr 2017 • Zhiqian Zhang, Chenliang Li, Zhiyong Wu, Aixin Sun, Dengpan Ye, Xiangyang Luo
Inspired by the recent success of neural networks in many areas, in this paper, we present a simple but effective neural network framework for next POI recommendation, named NEXT.
no code implementations • 1 Nov 2014 • Quan Yuan, Gao Cong, Aixin Sun
In this paper, we focus on the problem of time-aware POI recommendation, which aims at recommending a list of POIs for a user to visit at a given time.