Iliano Cervesato

This book describes recent multidisciplinary research at the confluence of the fields of logic programming, database theory and human-computer interaction. The goal of this effort was to develop the basis of a deductive spreadsheet, a user productivity application that allows users without formal training in computer science to make decisions about generic data in the same simple way they currently use spreadsheets to make decisions about numerical data. The result is an elegant design supported by the most recent developments in the above disciplines. The first half of the book focuses on the deductive engine that underlies this application, the foundations that users do not see. After giving a mathematical model of traditional spreadsheet applications, we extend them with operators to perform a number of relational tasks, similar to the user view of a database but in a spreadsheet context. Expressing this extension in a logic programming framework is a natural step towards giving it powerful deductive capabilities. The second half of the book deals with the user interface, the part of the application with which the user actually interacts. We review the elements of the graphical user interface of traditional spreadsheet applications and describe practical methodologies for designing user interfaces borrowed from the field of cognitive psychology. We then propose a design that conservatively integrates mechanisms for a user to take advantage of the new deductive capabilities. This is followed by the results of some preliminary usability experiments. The book will appeal to researchers and practitioners in the various areas underlying this work. Researchers will not only find interesting new developments in their domains, but will also learn how to achieve a multidisciplinary focus. Practitioners will find fully developed solutions to numerous problems that are not easily solvable using traditional spreadsheet applications.

The Deductive Spreadsheet

Helmut Veith

Andrei Voronkov

This book constitutes the refereed proceedings of the 15th International Conference on Logic for Programming, Artificial Intelligence, and Reasoning, LPAR 2008, which took place in Doha, Qatar, during November 22-27, 2008. The 45 revised full papers presented together with 3 invited talks were carefully revised and selected from 153 submissions. The papers address all current issues in automated reasoning, computational logic, programming languages and their applications and are organized in topical sections on automata, linear arithmetic, verification knowledge representation, proof theory, quantified constraints, as well as modal and temporal logics.

15th International Conference, LPAR 2008, Doha, Qatar, November 22-27, 2008, Proceedings

Logic for Programming, Artificial Intelligence, and Reasoning

This book constitutes the refereed proceedings of the 12th Asian Computing Science Conference, ASIAN 2007, held in Doha, Qatar, in December 2007. Covering all current aspects of computer and network security, the papers are organized in topical sections on program security, computer security, access control, protocols, intrusion detection, network security, and safe execution.

12th Asian Computing Science Conference, Doha, Qatar, December 9-11, 2007, Proceedings

Advances in Computer Science - ASIAN 2007. Computer and Network Security

This volume contains the papers presented at the 15th International Conference on Logic for Programming, Arti?cial Intelligence, and Reasoning (LPAR) held November22–27inDoha,QataronthepremisesoftheQatarcampusofCarnegie Mellon University. In its 15th edition, LPAR looked back at a rich history. The conference evolved out of the First and Second Russian Conferences on Logic Progr- ming, held in Irkutsk, in 1990, and aboard the ship “Michail Lomonosov” in 1991. The idea of organizing the conference came largely from Robert Kowalski, who also proposed the creation of the Russian Association for Logic Progr- ming. In 1992, it was decided to extend the scope of the conference. Due to considerableinterestinautomatedreasoningintheformerSovietUnion,thec- ference was renamed Logic Programming and Automated Reasoning (LPAR). Under this name three meetings were held during 1992–1994: again on board the ship “Michail Lomonosov” (1992), in St. Petersburg, Russia (1993), and on board the ship “Marshal Koshevoi” (1994). In 1999, the conference was held in Tbilisi, Georgia. At the suggestion of Michel Parigot,the conference changed its nameagaintoLogicforProgrammingandAutomatedReasoning(preservingthe acronym LPAR!) re?ecting an interest in additional areas of logic. LPAR 2000 was held on Reunion Island, France. In 2001, the name (but not the acronym) changed again to its current form. The 8th to the 14th meetings were held in the following locations: Havana, Cuba (2001) Tbilisi, Georgia (2002); Almaty, Kazakhstan(2003);Montevideo,Uruguay(2004);MontegoBay,Jamaica(2005); Phnom Penh, Cambodia (2006); and Yerevan, Armenia (2007).

Iliano Cervesato

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