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We consider the problem of computationally-efficient prediction from high dimensional and highly correlated predictors in challenging settings where accurate variable selection is effectively impossible. Direct application of penalization…

统计理论 · 数学 2017-12-08 Minerva Mukhopadhyay , David B. Dunson

In many areas of machine learning, it becomes necessary to find the eigenvector decompositions of large matrices. We discuss two methods for reducing the computational burden of spectral decompositions: the more venerable Nystom extension…

机器学习 · 统计学 2011-07-22 Darren Homrighausen , Daniel J. McDonald

MAP is the problem of finding a most probable instantiation of a set of variables in a Bayesian network given some evidence. Unlike computing posterior probabilities, or MPE (a special case of MAP), the time and space complexity of…

人工智能 · 计算机科学 2012-12-12 James D. Park , Adnan Darwiche

Higher-order methods for dependency parsing can partially but not fully address the issue that edges in dependency trees should be constructed at the text span/subtree level rather than word level. In this paper, we propose a new method for…

计算与语言 · 计算机科学 2022-05-24 Leilei Gan , Yuxian Meng , Kun Kuang , Xiaofei Sun , Chun Fan , Fei Wu , Jiwei Li

Leverage score sampling provides an appealing way to perform approximate computations for large matrices. Indeed, it allows to derive faithful approximations with a complexity adapted to the problem at hand. Yet, performing leverage scores…

机器学习 · 统计学 2019-01-25 Alessandro Rudi , Daniele Calandriello , Luigi Carratino , Lorenzo Rosasco

Word embeddings have been found to capture a surprisingly rich amount of syntactic and semantic knowledge. However, it is not yet sufficiently well-understood how the relational knowledge that is implicitly encoded in word embeddings can be…

人工智能 · 计算机科学 2017-08-22 Zied Bouraoui , Shoaib Jameel , Steven Schockaert

The majority of machine learning methods and algorithms give high priority to prediction performance which may not always correspond to the priority of the users. In many cases, practitioners and researchers in different fields, going from…

This study proposes a multitask learning architecture for extractive summarization with coherence boosting. The architecture contains an extractive summarizer and coherent discriminator module. The coherent discriminator is trained online…

计算与语言 · 计算机科学 2023-07-24 Renlong Jie , Xiaojun Meng , Lifeng Shang , Xin Jiang , Qun Liu

A novel solution to span detection and classification is presented in which a BART EncoderDecoder model is used to transform textual input into a version with XML-like marked up spans. This markup is subsequently translated to an…

计算与语言 · 计算机科学 2021-07-13 Cees Roele

When dealing with datasets containing a billion instances or with simulations that require a supercomputer to execute, computational resources become part of the equation. We can improve the efficiency of learning and inference by…

机器学习 · 计算机科学 2014-03-06 Max Welling

Beam search optimization resolves many issues in neural machine translation. However, this method lacks principled stopping criteria and does not learn how to stop during training, and the model naturally prefers the longer hypotheses…

计算与语言 · 计算机科学 2019-06-26 Mingbo Ma , Renjie Zheng , Liang Huang

In this paper, we exploit the innate document segment structure for improving the extractive summarization task. We build two text segmentation models and find the most optimal strategy to introduce their output predictions in an extractive…

计算与语言 · 计算机科学 2023-01-24 Lesly Miculicich , Benjamin Han

Neural network-based methods represent the state-of-the-art in question generation from text. Existing work focuses on generating only questions from text without concerning itself with answer generation. Moreover, our analysis shows that…

计算与语言 · 计算机科学 2018-03-13 Vishwajeet Kumar , Kireeti Boorla , Yogesh Meena , Ganesh Ramakrishnan , Yuan-Fang Li

One of the prime problems of computer science and machine learning is to extract information efficiently from large-scale, heterogeneous data. Text data, with its syntax, semantics, and even hidden information content, possesses an…

计算与语言 · 计算机科学 2024-09-10 Sarmad N. Mohammed , Semra Gündüç

Matrix completion is one of the key problems in signal processing and machine learning, with applications ranging from image pro- cessing and data gathering to classification and recommender sys- tems. Recently, deep neural networks have…

机器学习 · 统计学 2018-05-15 Duc Minh Nguyen , Evaggelia Tsiligianni , Nikos Deligiannis

In this paper, we study machine reading comprehension (MRC) on long texts, where a model takes as inputs a lengthy document and a question and then extracts a text span from the document as an answer. State-of-the-art models tend to use a…

计算与语言 · 计算机科学 2020-05-20 Hongyu Gong , Yelong Shen , Dian Yu , Jianshu Chen , Dong Yu

Machine Translation (MT) and automatic MT evaluation have improved dramatically in recent years, enabling numerous novel applications. Automatic evaluation techniques have evolved from producing scalar quality scores to precisely locating…

计算与语言 · 计算机科学 2026-03-23 Stefano Perrella , Eric Morales Agostinho , Hugo Zaragoza

We address the problem of extractive question answering using document-level distant super-vision, pairing questions and relevant documents with answer strings. We compare previously used probability space and distant super-vision…

计算与语言 · 计算机科学 2020-05-06 Hao Cheng , Ming-Wei Chang , Kenton Lee , Kristina Toutanova

Pre-trained Generative models such as BART, T5, etc. have gained prominence as a preferred method for text generation in various natural language processing tasks, including abstractive long-form question answering (QA) and summarization.…

计算与语言 · 计算机科学 2023-11-07 Prabir Mallick , Tapas Nayak , Indrajit Bhattacharya

Support Vector Machines (SVM) have gathered significant acclaim as classifiers due to their successful implementation of Statistical Learning Theory. However, in the context of multiclass and multilabel settings, the reliance on…

机器学习 · 计算机科学 2023-07-19 Sambhav Jain Reshma Rastogi