Understanding Keyword Queries for XML Retrieval

Using Structured Queries for Keyword Information Retrieval

An increasingly important class of keyword search tasks are those where users are looking for a specific piece of information buried within a few documents in a large collection. Examples include searching for someone’s phone number, the schedule for a meeting, or a package tracking URL, within a personal email collection. We refer to such tasks as “precision-oriented search tasks”. While moder...

Structural Feedback for Keyword-Based XML Retrieval

Keyword-based queries are an important means to retrieve information from XML collections with unknown or complex schemas. Relevance Feedback integrates relevance information provided by a user to enhance retrieval quality. For keyword-based XML queries, feedback engines usually generate an expanded keyword query from the content of elements marked as relevant or nonrelevant. This approach that...

Refining Keyword Queries for XML Retrieval by Combining Content and Structure

The structural heterogeneity and complexity of XML repositories makes query formulation challenging for the average user, even when she has an unambiguous information need. Although finding approximate answers to XML queries is an active area of research, it is often assumed that the user will provide some useful and correct structural information to describe the type or level of target XML ele...

Relaxing XML Preference Queries for Cooperative Retrieval

Today XML is an essential technology for knowledge management within enterprises and dissemination of data over the Web. Therefore the efficient evaluation of XML queries has been thoroughly researched. But given the ever growing amount of information available in different sources, also querying becomes more complex. In contrast to simple exact match retrieval, approximate matches become far m...

Effective keyword query structuring using NER for XML retrieval