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The problem of proximity full-text search is considered. If a search query contains high-frequently occurring words, then multi-component key indexes deliver an improvement in the search speed compared with ordinary inverted indexes. It was…

信息检索 · 计算机科学 2021-08-03 Alexander B. Veretennikov

Synonymous keyword retrieval has become an important problem for sponsored search ever since major search engines relax the exact match product's matching requirement to a synonymous level. Since the synonymous relations between queries and…

信息检索 · 计算机科学 2021-05-27 Yijiang Lian , Shuang Li , Chaobing Feng , YanFeng Zhu

Document-level relation extraction requires integrating information within and across multiple sentences of a document and capturing complex interactions between inter-sentence entities. However, effective aggregation of relevant…

计算与语言 · 计算机科学 2020-07-29 Guoshun Nan , Zhijiang Guo , Ivan Sekulić , Wei Lu

Keyword extraction is a crucial process in text mining. The extraction of keywords with respective contextual events in Twitter data is a big challenge. The challenging issues are mainly because of the informality in the language used. The…

计算与语言 · 计算机科学 2023-04-05 Vaibhav Khatavkar , Swapnil Mane , Parag Kulkarni

Specificity is important for extracting collocations, keyphrases, multi-word and index terms [Newman et al. 2012]. It is also useful for tagging, ontology construction [Ryu and Choi 2006], and automatic summarization of documents [Louis and…

计算与语言 · 计算机科学 2014-03-11 Michael Stewart

Answering numerical questions over hybrid contents from the given tables and text(TextTableQA) is a challenging task. Recently, Large Language Models (LLMs) have gained significant attention in the NLP community. With the emergence of large…

计算与语言 · 计算机科学 2023-09-25 Tongxu Luo , Fangyu Lei , Jiahe Lei , Weihao Liu , Shihu He , Jun Zhao , Kang Liu

Lexicon-based retrieval has gained siginificant popularity in text retrieval due to its efficient and robust performance. To further enhance performance of lexicon-based retrieval, researchers have been diligently incorporating…

计算与语言 · 计算机科学 2024-04-19 Zunran Wang , Zhonghua Li , Wei Shen , Qi Ye , Liqiang Nie

Keyphrase extraction from a given document is the task of automatically extracting salient phrases that best describe the document. This paper proposes a novel unsupervised graph-based ranking method to extract high-quality phrases from a…

信息检索 · 计算机科学 2022-01-27 Venktesh V , Mukesh Mohania , Vikram Goyal

In the field of information retrieval, query expansion (QE) has long been used as a technique to deal with the fundamental issue of word mismatch between a user's query and the target information. In the context of the relationship between…

信息检索 · 计算机科学 2022-08-16 Hiteshwar Kumar Azad , Akshay Deepak

Full-text search engines are important tools for information retrieval. In a proximity full-text search, a document is relevant if it contains query terms near each other, especially if the query terms are frequently occurring words. For…

信息检索 · 计算机科学 2020-09-09 Alexander B. Veretennikov

Data mining has been widely recognized as a powerful tool to explore added value from large-scale databases. Finding frequent item sets in databases is a crucial in data mining process of extracting association rules. Many algorithms were…

数据库 · 计算机科学 2010-03-23 M. S. Danessh , C. Balasubramanian , K. Duraiswamy

Parallel sentence extraction is a task addressing the data sparsity problem found in multilingual natural language processing applications. We propose a bidirectional recurrent neural network based approach to extract parallel sentences…

计算与语言 · 计算机科学 2018-08-28 Francis Grégoire , Philippe Langlais

This paper investigates the efficiency of the EWC semantic relatedness measure in an ad-hoc retrieval task. This measure combines the Wikipedia-based Explicit Semantic Analysis measure, the WordNet path measure and the mixed collocation…

计算与语言 · 计算机科学 2011-08-23 Vitaly Klyuev , Yannis Haralambous

In this paper, we study the MapReduce framework from an algorithmic standpoint and demonstrate the usefulness of our approach by designing and analyzing efficient MapReduce algorithms for fundamental sorting, searching, and simulation…

分布式、并行与集群计算 · 计算机科学 2011-01-11 Michael T. Goodrich , Nodari Sitchinava , Qin Zhang

Citation-based Information Retrieval (IR) methods for scientific documents have proven effective for IR applications, such as Plagiarism Detection or Literature Recommender Systems in academic disciplines that use many references. In…

信息检索 · 计算机科学 2023-03-21 Philipp Scharpf , Moritz Schubotz , Howard S. Cohl , Corinna Breitinger , Bela Gipp

Conversational search seeks to retrieve relevant passages for the given questions in conversational question answering. Conversational Query Reformulation (CQR) improves conversational search by refining the original queries into…

计算与语言 · 计算机科学 2025-05-16 Jeonghyun Park , Hwanhee Lee

Tree of Thoughts (ToT) enhances Large Language Model (LLM) reasoning by structuring problem-solving as a spanning tree. However, recent methods focus on search accuracy while overlooking computational efficiency. The challenges of…

Keyword extraction is an important document process that aims at finding a small set of terms that concisely describe a document's topics. The most popular state-of-the-art unsupervised approaches belong to the family of the graph-based…

计算与语言 · 计算机科学 2020-08-24 Eirini Papagiannopoulou , Grigorios Tsoumakas , Apostolos N. Papadopoulos

In this paper, we present a MapReduce-based framework for evaluating SPARQL queries on GPU (named MapSQ) to large-scale RDF datesets efficiently by applying both high performance. Firstly, we develop a MapReduce-based Join algorithm to…

数据库 · 计算机科学 2017-02-14 Jiaying Feng , Xiaowang Zhang , Zhiyong Feng

Document-level relation extraction is to extract relation facts from a document consisting of multiple sentences, in which pronoun crossed sentences are a ubiquitous phenomenon against a single sentence. However, most of the previous works…

计算与语言 · 计算机科学 2022-02-23 Zhongxuan Xue , Rongzhen Li , Qizhu Dai , Zhong Jiang