Web Information Extraction (WIE) is the task of automatically extracting knowledge from Web content. On-demand WIE systems such as KNOWITNOW [1] and TEXTRUNNER [2] allow users to query the Web for a textual context that indicates a desired relation. For example, the context “$x invented $y” indicates the Invented(x, y) relation. The WIE system is tasked with responding in real-time with a list ...

The tourism industry is a good candidate for taking up Semantic Web technology. In fact, there are many portals and websites belonging to the tourism domain that promote tourist products (places to visit, food to eat, museums, etc.) and tourist services (hotels, events, etc.), published by several operators (tourist promoter associations, public agencies, etc.). This article presents how the MO...

Travelling and exploring new locations have become a very common and most attractive hobby for a lot of people. Ranging from a long holiday to some faraway places to a weekend getaway to a comparatively nearby unique spot, every type of touristic activity is highly cherished among the avid explorers. This leads to a demand for a resource that would cater the need of this rapidly growing communi...

In this paper, we study how data from the Semantic Web can be used for case studies in the Humanities. We conduct a proof of concept, using the YAGO knowledge base to study life expectancy, birth rates, and the age at childbirth over time. We also discuss the information extraction methods that we used to make YAGO sufficiently complete for these analyses to work.

This paper addresses the problem of extracting information from textual documents, either normal documents or web pages. A new approach for extracting complicate information from semi-structured documents is introduced that exploits a successive hierarchical rule-learning algorithm. Through evaluation it is shown that this approach can extract complicate concepts with a much higher precision th...

Purpose – The purpose of this research is to describe the development of an indexing template to guide the indexing of images using keywords. The template is designed to be used for indexing the image collection held at The Children’s Society. Design/methodology/approach – A facet matrix based on analysis of existing studies was used to identify the most popular user query facets from user stud...

Materials and Process Specifications are complex semi-structured documents containing numeric data, text, and images. This article describes a coarse-grain extraction technique to automatically reorganize and summarize spec content. Specifically, a strategy for semantic-markup, to capture content within a semantic ontology, relevant to semi-automatic extraction, has been developed and experimen...

A new approach to large-scale information extraction exploits both Web documents and query logs to acquire thousands of opendomain classes of instances, along with relevant sets of open-domain class attributes at precision levels previously obtained only on small-scale, manually-assembled classes.

The application of standard Information Extraction techniques to Patent Analysis has several limitations partially due to the difference existing between patents and web pages, which are the object of the biggest majority of information search. Indeed, while in other fields customized processing techniques have been developed, the number of studies fully dedicated to patent text mining is very ...