(Apologies for multiple copies) (Second) Call for Papers Workshop on Intersection Types and Related Systems (ITRS '02) Copenhagen, Denmark Friday, July 26 2002 http://www.doc.ic.ac.uk/~itrs02/ Co-located with FLoC '02, the third Federated Logic Conference to be held in Copenhagen, Denmark (July 22 to August 1 2002) http://floc02.diku.dk/ IMPORTANT DATES/DEADLINES: Submission of papers: Sunday, April 7 2002 Notification of acceptance: Thursday, April 25 2002 Workshop: Friday, July 26 2002 OVERALL TOPIC AND FORMAT OF WORKSHOP: Intersection type disciplines originated in 1980 to overcome the limitations of Curry's type assignment system and to provide a characterisation of the strongly normalising terms of the Lambda Calculus. Since then, intersection types disciplines were used in a series of papers for characterising evaluation properties and semantics. Types also support reliable reasoning in many areas such as logic, programming languages, linguistics, etc. A _polymorphic_ type stands for some number of instance types, and the use of type systems for non-trivial purposes generally requires polymorphic types. In this context, roughly speaking, intersection types could be seen as to provide type polymorphism by listing type instances. This differs from the more widely used ("forall") quantified types, which provide type polymorphism by giving a type scheme that can be instantiated into various type instances. (A similar relationship holds between union types and existential types, the duals of intersection types and universal types.) Although intersection types were initially intended for use in analyzing and/or synthesizing lambda models as well as in analyzing normalization properties, over the last twenty years the scope of theoretical research on intersection types has broadened. Recently, there have been a number of breakthroughs in the use of intersection types (and similar technology) for practical purposes such as program analysis. The ITRS '02 workshop will be held to bring together researchers working on both the theory and practice of systems with intersection types and related systems (e.g., union types, refinement types, etc.). The workshop will last one full day and will contain a long talk by each invited speaker, a panel discussion, and a short (approx. 25 minutes) talk for each accepted paper. POSSIBLE TOPICS FOR SUBMITTED PAPERS: Researchers are invited to submit original papers on topics in the spirit of the workshop. Possible topics for submitted papers include, but are not limited to: * Formal properties of systems with intersection types: principal typings, normalization properties (for normal forms, head-normal forms, weak head-normal forms, etc.), type inference algorithms. * Results for clearly related systems, e.g., systems with union types, refinement types, or singleton types. * Connections with not-so-clearly related approaches such as abstract interpretation and constraints. * Applications to lambda calculus and similar systems, e.g., denotational semantics, analysis/synthesis of lambda models (domains), characterization of operational properties, etc. * Applications for programming languages, e.g., program analysis (flow, strictness, totality, etc.), accurate type error messages, increased flexibility with static typing, separate compilation and modularity, optimizing transformations, types for objects, etc. * Applications for other areas, e.g., database query languages, program extraction from proofs, type systems for natural languages. INVITED SPEAKER (confirmed) Frank Pfenning (Carnegie Mellon University, USA) REGISTRATION FEE 50 Euro for the workshop; an additional 80 Euro will be charged to participants who haven't registered for one of the main FLoC conferences (but only once, not per workshop) PROGRAM COMMITTEE: Steffen van Bakel (Chair) (Imperial College, London, UK) Franco Barbanera (Universita` di Catania, Italia) Mario Coppo (Universita` di Torino, Italia) Luca Roversi (Universita` di Torino, Italia) Lyn Turbak (Wellesley College (MA) USA) Pawel Urzyczyn (Uniwersytet Warszawski, Polska) Joe Wells (Heriot-Watt University, Edinburgh, Scotland) SUBMISSION INSTRUCTIONS: TOPIC: A submitted paper must describe work that does not substantially overlap with work that has been previously published or is currently being considered elsewhere (e.g., another workshop, conference, or journal). Feel free to consult the program chair on the appropriateness of a topic or the possibility of conflict with another publication. PRINTED APPEARANCE: The paper must be written in English. The paper (including bibliography) should not exceed 15 pages. The paper should a font size no smaller than 11pt and standard TeX spacing. It is recommended to include full proofs of any theorems in appendices if they will not fit in 15 pages. However, any appendices beyond the 15-page limit should not be needed for judging the paper and will not be included in the proceedings. PAPER ELECTRONIC FORMAT: The paper should be in PostScript or PDF. Every effort should be made to ensure that only portable PostScript features are used (e.g., avoid using non-standard built-in fonts). For other formats, ask the program chair well in advance of the deadline. For TeX, the class file itrspaper.cls is recommended for use (available at http://www.doc.ic.ac.uk/~itrs02/itrspaper.cls). ADMINISTRATIVE INFORMATION: The first page of the paper should include (1) the title, (2) the list of authors, (3) a brief abstract (fewer than 200 words), (4) a short list of key words/topics, and (5) the name, e-mail address, and postal address of the corresponding author. This information should be repeated at the Paper Submission Page available at the workshop's website = (http://www.doc.ic.ac.uk/~itrs02/). SUBMISSION: Papers can be submitted electronically via the Paper Submission Page available at the workshop's website = (http://www.doc.ic.ac.uk/~itrs02/). VENUE: The workshop is colocated with the FLoC '02 conference, which will be held in Copenhagen, Denmark. CONTACT INFORMATION: Web: http://www.doc.ic.ac.uk/~itrs02/ Program chair: Steffen van Bakel e-mail: itrs02@doc.ic.ac..uk telephone: +44 20 7495 8263 fax: +44 20 7581 8024 postal: Department of Computing Imperial College 180 Queens's Gate London SW7 2BZ, UK