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A common method of generalizing binary to multi-class classification is the error correcting code (ECC). ECCs may be optimized in a number of ways, for instance by making them orthogonal. Here we test two types of orthogonal ECCs on seven…

Machine Learning · Statistics 2023-05-18 Peter Mills

We consider the problem of conversational question answering over a large-scale knowledge base. To handle huge entity vocabulary of a large-scale knowledge base, recent neural semantic parsing based approaches usually decompose the task…

Computation and Language · Computer Science 2019-10-14 Tao Shen , Xiubo Geng , Tao Qin , Daya Guo , Duyu Tang , Nan Duan , Guodong Long , Daxin Jiang

A plethora of diverse approaches for question answering over RDF data have been developed in recent years. While the accuracy of these systems has increased significantly over time, most systems still focus on particular types of questions…

Information Retrieval · Computer Science 2017-10-25 Ricardo Usbeck , Michael Hoffmann , Michael Röder , Jens Lehmann , Axel-Cyrille Ngonga Ngomo

Prior work has demonstrated that question classification (QC), recognizing the problem domain of a question, can help answer it more accurately. However, developing strong QC algorithms has been hindered by the limited size and complexity…

Computation and Language · Computer Science 2019-08-16 Dongfang Xu , Peter Jansen , Jaycie Martin , Zhengnan Xie , Vikas Yadav , Harish Tayyar Madabushi , Oyvind Tafjord , Peter Clark

We reformulate explanation quality assessment as a ranking problem rather than a generation problem. Instead of optimizing models to produce a single "best" explanation token-by-token, we train reward models to discriminate among multiple…

Artificial Intelligence · Computer Science 2026-04-28 Thomas Bailleux , Tanmoy Mukherjee , Emmanuel Lonca , Pierre Marquis , Zied Bouraoui

We aim at advancing blind image quality assessment (BIQA), which predicts the human perception of image quality without any reference information. We develop a general and automated multitask learning scheme for BIQA to exploit auxiliary…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Weixia Zhang , Guangtao Zhai , Ying Wei , Xiaokang Yang , Kede Ma

This paper presents an approach for answering fill-in-the-blank multiple choice questions from the Visual Madlibs dataset. Instead of generic and commonly used representations trained on the ImageNet classification task, our approach…

Computer Vision and Pattern Recognition · Computer Science 2018-02-09 Tatiana Tommasi , Arun Mallya , Bryan Plummer , Svetlana Lazebnik , Alexander C. Berg , Tamara L. Berg

Question answering (QA) has become a popular way for humans to access billion-scale knowledge bases. Unlike web search, QA over a knowledge base gives out accurate and concise results, provided that natural language questions can be…

Computation and Language · Computer Science 2019-03-07 Wanyun Cui , Yanghua Xiao , Haixun Wang , Yangqiu Song , Seung-won Hwang , Wei Wang

Quantization is widely applied in machine learning to reduce computational and storage costs for both data and models. Considering that classification tasks are fundamental to the field, it is crucial to investigate how quantization impacts…

Machine Learning · Computer Science 2025-07-14 Weizhi Lu , Mingrui Chen , Weiyu Li

Technical Q&A sites have become essential for software engineers as they constantly seek help from other experts to solve their work problems. Despite their success, many questions remain unresolved, sometimes because the asker does not…

Software Engineering · Computer Science 2019-03-25 Fabio Calefato , Filippo Lanubile , Nicole Novielli

Multi-hop Knowledge Base Question Answering (KBQA) aims to find the answer entities that are multiple hops away in the Knowledge Base (KB) from the entities in the question. A major challenge is the lack of supervision signals at…

Computation and Language · Computer Science 2021-04-08 Gaole He , Yunshi Lan , Jing Jiang , Wayne Xin Zhao , Ji-Rong Wen

Crowdsourcing has emerged as an effective platform for labeling large amounts of data in a cost- and time-efficient manner. Most previous work has focused on designing an efficient algorithm to recover only the ground-truth labels of the…

Human-Computer Interaction · Computer Science 2023-06-01 Hyeonsu Jeong , Hye Won Chung

This paper proposes a new task in the field of Answering Subjective Induction Question on Products (SUBJPQA). The answer to this kind of question is non-unique, but can be interpreted from many perspectives. For example, the answer to…

Computation and Language · Computer Science 2023-10-09 Yufeng Zhang , Meng-xiang Wang , Jianxing Yu

In open-domain question answering, dense passage retrieval has become a new paradigm to retrieve relevant passages for finding answers. Typically, the dual-encoder architecture is adopted to learn dense representations of questions and…

Computation and Language · Computer Science 2021-05-13 Yingqi Qu , Yuchen Ding , Jing Liu , Kai Liu , Ruiyang Ren , Wayne Xin Zhao , Daxiang Dong , Hua Wu , Haifeng Wang

Classification tasks in machine learning involving more than two classes are known by the name of "multi-class classification". Performance indicators are very useful when the aim is to evaluate and compare different classification models…

Machine Learning · Statistics 2020-08-14 Margherita Grandini , Enrico Bagli , Giorgio Visani

In cases of uncertainty, a multi-class classifier preferably returns a set of candidate classes instead of predicting a single class label with little guarantee. More precisely, the classifier should strive for an optimal balance between…

Machine Learning · Computer Science 2020-05-28 Thomas Mortier , Marek Wydmuch , Krzysztof Dembczyński , Eyke Hüllermeier , Willem Waegeman

Hybrid question answering (HQA) aims to answer questions over heterogeneous data, including tables and passages linked to table cells. The heterogeneous data can provide different granularity evidence to HQA models, e.t., column, row, cell,…

Computation and Language · Computer Science 2022-10-20 Yingyao Wang , Junwei Bao , Chaoqun Duan , Youzheng Wu , Xiaodong He , Tiejun Zhao

Ranking consistently emerges as a primary focus in information retrieval research. Retrieval and ranking models serve as the foundation for numerous applications, including web search, open domain QA, enterprise domain QA, and text-based…

Information Retrieval · Computer Science 2024-12-16 Hansa Meghwani

Most information in our world is organized hierarchically; however, many Deep Learning approaches do not leverage this semantically rich structure. Research suggests that human learning benefits from exploiting the hierarchical structure of…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Alexandru Manole , Laura Diosan

Users post numerous product-related questions on e-commerce platforms, affecting their purchase decisions. Product-related question answering (PQA) entails utilizing product-related resources to provide precise responses to users. We…

Computation and Language · Computer Science 2024-09-25 Yifei Yuan , Yang Deng , Anders Søgaard , Mohammad Aliannejadi
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