搜索结果: 1-15 共查到“计算机科学技术 Retrieval”相关记录35条 . 查询时间(0.129 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Building private information retrieval schemes over binary fields
二进制字段 私有信息 检索方案
2023/4/21
The private information retrieval (PIR) problem was first proposed by Chor et al. in 1995, and it is a canonical problem in the study of privacy issues that arise from the retrieval of information fro...
第二十三届全国信息检索学术会议(The 23rd China Conference on Information Retrieval, 简称CCIR2017)由中国中文信息学会(CIPS)和中国计算机学会(CCF)联合主办， 由华东理工大学承办，定于2017年7月13日~14日在上海市召开。中国中文信息学会主办的每年一次的“全国信息检索学术会议”(CCIR)系列， 已成功举办过9届，是国内信息检索...
2017第九届知识发现与信息检索国际会议（9th International Conference on Knowledge Discovery and Information Retrieval）
第九届 知识发现与信息检索 国际会议
2017/3/21
Knowledge Discovery is an interdisciplinary area focusing upon methodologies for identifying valid, novel, potentially useful and meaningful patterns from data, often based on underlying large data se...
SEMANTIC CLUSTERING WITH CONTEXT ONTOLOGY FOR INFORMATION RETRIEVAL SYSTEM
indexing context ontology semantic suffix tree clustering (SSTC)
2015/7/10
Nowadays, there are so many increasing amount of information within world-wide web. For these increasing amounts of information, we need efficient and effective index structure when we have to find ne...
Discovering and Using Implicit Data for Information Retrieval
Contextual Translation Implicit Data Information Retrieval Language Model Missing information Relevance Model
2014/12/18
In real-world information retrieval (IR) tasks, the searched items and/or the users' queries often have implicit information associated with them -- information that describes unspecified aspects of t...
Query-Dependent Selection of Retrieval Alternatives
Information Retrieval Learning to Rank Machine Learning
2014/12/18
The main goal of this thesis is to investigate query-dependent selection of retrieval alternatives for Information Retrieval (IR) systems. Retrieval alternatives include choices in representing querie...
Retrieval and Evaluation Techniquesfor Personal Information
Information Retrieval Personal Information Management
2014/12/18
Providing an effective mechanism for personal information retrieval is important for many applications, and requires different techniques than have been developed for general web search. This thesis f...
Current information retrieval models are optimized for retrieval with short keyword queries. In contrast, in this dissertation we focus on longer, verbose queries with more complex structure that are ...
Exploring Privacy and Personalization in Information Retrieval Applications
information retrieval personalization privacy web search
2014/12/18
A growing number of information retrieval applications rely on search behavior aggregated over many users. If aggregated data such as search query reformulations is not handled properly, it can allow ...
Query-Time Optimization Techniques for Structured Queries in Information Retrieval
algorithms information retrieval optimization search
2014/12/18
The use of information retrieval (IR) systems is evolving towards larger, more complicated queries. Both the IR industrial and research communities have generated significant evidence indicating that ...
Retrieval Models based on Linguistic Features of Verbose Queries
Information Retrieval Retrieval Model Modeling Term Dependencies Focused Retrieval Query Term Expansion Translation Model
2014/12/18
Natural language expressions are more familiar to users than choosing keywords for queries. Given that, people can use natural language expressions to represent their sophisticated information needs. ...
Indexing Proximity-based Dependencies for Information Retrieval
Efficiency Evaluation Information Retrieval Systems
2014/12/18
Research into term dependencies for information retrieval has demonstrated that dependency retrieval models are able to consistently improve retrieval effectiveness over bag-of-words models. However, ...
Entity-based Enrichment for Information Extraction and Retrieval
Information Retrieval Information Extraction Search Search Engines Knowledge Base
2014/12/18
The goal of this work is to leverage cross-document entity relationships for improved understanding of queries and documents. We define an entity to be a thing or concept that exists in the world, suc...
Large Scale Image Retrieval From Books
search engine image retrieval random walk book indexing large scale cloud computing
2014/12/8
Search engines play a very important role in daily life. As multimedia product becomes more and more popular, people have developed search engines for images and videos. In the first part of this thes...
OPEN-VOCABULARY SPOKEN UTTERANCE RETRIEVAL USING CONFUSION NETWORKS
Spoken Utterance Retrieval Confusion Network Audio Indexing
2014/11/27
This paper presents a novel approach to open-vocabulary spoken utterance retrieval using confusion networks. If out-of-vocabulary (OOV) words are present in queries and the corpus, word-based indexing...