This paper investigates whether a machine can automatically learn the task of finding, within a large collection of candidate responses, the answers to questions. The learning process consists of inspecting a collection of answered questions and characterizing ...

Information Requirement Elicitation (IRE) is essential in wireless web service to elicit information requirements through interactive choice prompts. We present a design of a high-level user interface for IRE, in the context of ¿banking database queries¿ ...

Since the Web consists of documents in various domains or genres, methods used for Cross-Language Information Retrieval (CLIR) of Web documents should be independent of a particular domain. In this paper, we propose a CLIR method that uses Web directories ...

Efficient query optimization is critical to the performance of query processing in a database system. The same is true for XML databases and queries. XML queries naturally carry a tree-shaped search pattern which usually contains redundancies. Efficient ...

Research has reported that about 10% of Web searchers utilize advanced query operators, with the other 90% using extremely simple queries. It is often assumed that the use of query operators, such as Boolean operators and phrase searching, ...

The detection of new information in a document stream is an important component of many potential applications. In this work, a new novelty detection approach based on the identification of sentence level information patterns is proposed. First, ...

We model heterogeneous data sources with cross references, such as those crawled on the (enterprise) web, as a labeled graph with data objects as typed nodes and references or links as edges. Given the labeled data graph, we introduce flexible and efficient ...

While in recent years some effort has been put into helping users manage their personal information in their computers, little has been done to provide meaningful ways to organize and retrieve a user's personal physical objects. Nowadays, technologies ...

Most keyword search engines return directly matching keyword phrases. However, publishers cannot anticipate all possible ways in which users would search for the items in their documents. In fact, many times, there may be no direct keyword match between ...

Abstract¿In this paper, we study the node distribution of an R-tree storing region data, like, for instance, islands, lakes, or human-inhabited areas. We will show that real region datasets are packed in an R-tree into minimum bounding rectangles (MBRs) ...

When retrieving and searching desired data over large databases accessible in the web, users might be confronted with two common problems: overabundant answers and empty answers. In the former, the user is provided with an avalanche of responses that ...

Researchers have found relevance feedback to be effective in interactive information retrieval, although few formal user experiments have been made. In order to run a user experiment on a large document collection, experiments were performed at NIST ...

Applications using XML for data representation very often use different XML formats and thus require the transformation of XML data. The common approach transforms entire XML documents from one format into another, e.g. by using an XSLT stylesheet. Different ...

Systems for searching the Web based on thematic contexts can be built on top of a conventional search engine and benefit from the huge amount of content as well as from the functionality available through the search engine interface. The quality of the ...

One aspect of world knowledge essential to information retrieval is knowing when two words are related. Knowing word relatedness allows a system given a user's query terms to retrieve relevant documents not containing those exact terms. Two words can ...

We are addressing the efficient processing of continuous XML streams, in which the server broadcasts XML data to multiple clients concurrently through a multicast data stream, while each client is fully responsible for processing the stream. In our framework, ...

It has been well documented that web searchers havedifficulties crafting queries to fulfill their information needs. In this work, we use a concept knowledge base generated from the ACM Computing Classification System to generate a query space that represents ...