Abstract
The concept of Semantic Web, introduced by Berners-Lee in 2001, emphasizes importance of expressing semantics of data stored on the web. The introduced data format called Resource Description Framework (RDF) is a meaningful way of expressing and exploring data relations. It provides basics for constructing semantics-oriented data formats. More and more often RDF is used to represent variety of data including N-ary relations and temporal information. On many occasions this results in complex data structures. Their utilization requires a full understating of applied data configurations.
This paper presents a fuzzy-based Linguistically Oriented RDF Interface - LORI - for querying RDF data containing temporal information and using non-trivial data structures. The interface includes specialized built-in predicates suitable for constructing temporal queries and supporting imprecise phrases describing time and data features, and high-level predicates built based on them. A simple case study using LORI interface for imprecise querying about time-based events is presented.