搜索结果: 1-15 共查到“计算机科学技术 Query”相关记录15条 . 查询时间(0.046 秒)
A Query Language for Understanding Component Interactions in Production Systems
Query language logs influence correlation production systems
2016/5/24
When something unexpected happens in a large production system,administrators must first perform a search to isolate which components and component interactions are likely to be involved. The system m...
Generalized Selection via Interactive Query Relaxation
Selection annotation pointing reference information visualization input techniques query relaxation
2016/5/24
Selection is a fundamental task in interactive applications,
typically performed by clicking or lassoing items of
interest. However, users may require more nuanced forms
of selection. Selecting reg...
Query Understanding Enhanced by Hierarchical Parsing Structures
query understanding semantic tagging linguistic parsing
2016/1/23
Query understanding has been well studied in the areas of information retrieval and spoken language understanding(SLU). There are generally three layers of query understanding: domain classification, ...
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...
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 ...
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 ...
SEARCHING BASED ON QUERY DOCUMENTS
Domain-specific searches Query document search Query generation Query suggestion Search diversification
2014/12/18
Searches can start with query documents where search queries are formulated based on document-level descriptions. This type of searches is more common in domain-specific search environments. For examp...
Adding Conflict Resolution Features to a Query Language for Database Federations
Conflict Resolution Features Query Language Database Federations
2009/12/9
A main problem of data integration is the treatment of conflicts caused by different modeling of realworld entities, different data models or simply by different representations of one and the same ob...
K-th Number Query问题的改进算法研究
第K大数查询 位索引树 随机化选择
2009/9/30
K-th number query是计算机算法中的一个基础问题，被广泛作为很多算法实现的重要步骤。对该问题进行了深入研究，并找到了单询问渐近时间复杂度最优的算法。目前一般对于多询问的K-th number query问题使用平衡二叉树解决，询问的时间复杂度为O（lb n）。但该算法实现比较复杂，并且常系数较大，提出了基于Bit Indexed Tree数据结构的算法解决，在同等时间复杂度的前提下，...
Large-Scale Cross-Media Retrieval of WikipediaMM Images with Textual and Visual Query Expansion
Image retrieval textual query expansion query-dependent visual concept detection cross-media re-ranking.
2013/7/16
In this paper, we present our approaches for the WikipediaMM task at ImageCLEF 2008. We first experimented with a text-based image retrieval approach with query expansion, where the extension terms we...
PKU at ImageCLEF 2008: Experiments with Query Extension Techniques for Text-Base and Content-Based Image Retrieval
PKU at ImageCLEF 2008 Experiments with Query Extension Techniques Text-Base Content-Based Image Retrieval
2013/7/17
In this paper, we present our solutions for the WikipediaMM task at ImageCLEF 2008. The aim of this task is to investigate effective retrieval approaches in the context of a large-scale and heterogene...
A Query System for XML Data Stream and its Semanticsbased Buffer Reduction
XML Data Stream Query Optimization Buffer Management SAX
2014/3/11
With respect to current methods for query evaluation over XML data streams, adoption of certain types of buffering techniques is unavoidable. Under lots of circumstances, the buffer scale may increase...
AbstractStructured documents are made up of a few logical components, such as title, sections, subsections and paragraphs. The components in each structured document can be represented by an ordered t...
A Bucket-Based Approach to Query Rewriting Using Views in the Presence of Inclusion Dependencies
A Bucket-Based Approach Query Rewriting Views in the Presence Inclusion Dependencies
2014/3/12
A number of algorithms based on the use of either buckets or inverse rules have been proposed to address the problem of query rewriting using views. Some inverse rule-based algorithms have considered ...
With the fast rising of the video sharing websites, the online video becomes an important media for people to share messages, interests, ideas, beliefs, etc. In this paper, we propose a novel approac...