Call for participation

8th International Workshop on
Knowledge Representation meets Databases, KRDB-2001

Roma, Italy, September 15, 2001
(affiliate event of The 27th International Conference on Very Large Data Bases -- VLDB 2001 )

The 8th International KRDB Workshop continues the tradition of annual international workshops devoted to facilitate cross-fertilization between the fields of knowledge representation (KR) and databases (DB). In particular, KRDB-2001 will focus on

Modeling, Querying and Managing Semistructured Data

Semistructured data are data that are self-describing, irregular, and with a structure that is partially known, or subject to frequent changes. They are usually formalized in terms of labeled graphs, and capture data as found in many application areas, such as web information systems, digital libraries, and data integration. Database researchers are studying several aspects of semistructured data, including how to model such data, how to query and restructure them, and how to store and manage them. On the other hand, there are many kinds of reasoning that can be carried out on semistructured data in order to support the above tasks. For instance, the discovery of certain regularity may help in deciding the appropriate storage structures in a particular context, or, the fact that a certain schema subsumes another one may help in comparing data coming from different sources, or in translating data from a certain format to another one. The goal of the workshop is to bring together people from the Database and the Knowledge Representation and Reasoning communities, in order to compare different points of views and various sets of techniques that can be used for the tasks related to Modeling, Querying and Managing Semistructured Data.

Invited talk

TITLE: Declarative Information Extraction, Web Crawling and Recursive Wrapping with Lixto

SPEAKER: Georg Gottlob, Vienna University of Technology, (TU Wien)

ABSTRACT: Lixto is a system and method for the visual and interactive generation of wrappers for Web pages under the supervision of a human developer, for automatically extracting information from Web pages using such wrappers, and for translating the extracted content into XML. In this talk, we describe some advanced features of Lixto, such as disjunctive pattern definitions, specialization rules, and Lixto's capability of collecting and aggregating information from several linked Web pages. We illustrate these features with significant examples from the commercial domain.

Joint work with Robert Baumgartner and Sergio Flesca.

Preliminary program

8:30 Introduction

8:35 Invited talk by Georg Gottlob

9:30 Coffee break

10:00 Session 1

12:00 Lunch (included in the registration fee)

13:30 Session 2

15:30 Coffee break

16:00 Session 3

17:00 Panel

Workshop organizers

Program committee

The proceedings will be electronically available at At the workshop, a hard copy of the proceedings will be handed out to the participants.

For more information on the workshop, including registration, please check the Web page of KRDB-2001 at Enquiries about the KRDB-2001 workshop can be made by mailing to

Last modified: Mon Sep 10 16:02:39 2001