4th Int'l Symposium on Prog. Lang. Implementation and Logic Prog.

                                              August 26 - 28, 1992
                                              Leuven, Belgium




                                                        PROGRAM


                       Fourth International Symposium on


                   Programming Language Implementation


                                and Logic Programming


                                              August 26 - 28, 1992
                                              Leuven, Belgium






Sponsored by :


Association of Logic Programming,
Belgian National Fund for Scientific Research,
BIM




The aim of the symposium is to explore new declarative concepts, methods
and techniques relevant for implementation of all kinds of programming
languages, whether algorithmic or declarative ones. The intension is to
gather researchers from the fields of algorithmic programming languages
as well as logic, functional and object-oriented programming. PLILP 92
will take place in Leuven, Belgium, from August 26 till August 28.


Sharing a common location, and thus a common history, the city and the
University have grown together through the centuries. Leuven was founded
in the 9th century and the university in 1425. The center of the city, in
all its charm and commercial vitality, is a cluster of historical
monuments of which the 15th century Gothic City Hall forms the center
piece. Many attractive cafes and restaurants add to the town's playful
charm.


PLILP 92's predecessors have been held in Orleans (1988), Linkoping (1990)
and Passau (1991). The program of PLILP 92 contains 29 selected talks
out of 82 contributions. Invited speakers are P. Cousot (Ecole Normale
Superieure, Paris) and M. Hanus (Universitaet des Saarlandes).


In parallel to the talks there will be system demonstrations about new
implementations in the area of functional, logic and object-oriented pro-
gramming languages. Participants who are interested in presenting sys-
tems related to the topics of PLILP are requested to contact Bart Demoen
by e-mail (bimbart@cs.kuleuven.ac.be) before June 22, 1992.


Program


Wednesday, August 26
8h30 Registration
9h00 Invited Lecture: M. Hanus : Improving Control of Logic Programs by
Using Functional Logic Languages
Session: Parallelism
10h00 H. Kuchen, J.J. Moreno-Navarro, M.V. Hermenegildo: Independent
AND-Parallel Implementation of Narrowing
10h30 V'eron, M. Dorochevsky: Binding Techniques and Garbage Collection for
OR-parallel CLP Systems
11h00 Coffee Break
Session: Static Analysis
11h30 C.K. Gomard, P. Sestoft: Path Analysis for Lazy Data Structures
12h00 K.R. Apt, A. Pellegrini: Why the Occur-check is Not a Problem
12h30 Lunch
Session: Implementation I
14h00 I. Attali, J. Chazarain, S. Gilette: Incremental Evaluation of Natural
Semantics Specifications
14h30 F. Barth'elemy, E. Villemonte de la Clergerie: Subsumption-oriented
Push-down Automata
15h00 S. Kahrs: Unlimp, Uniqueness as a Leitmotiv for Implementation
15h30 Coffee Break
Session: Attribute Grammars
15h45 M. Pennings, D. Swierstra, H. Vogt: Using Cached Functions and
Constructors for Incremental Attribute Evaluation
16h15 M. Rosendahl: Strictness Analysis for Attribute Grammars
16h45 S. Saidi, J.-F. Boulicaut: Checking and Debugging of Two-level
Grammars
17h30 Guided Tour


Thursday, August 27
Session: Transformation/Synthesis
8h30 A. Bossi, N. Cocco, S. Etalle: On Safe Folding
9h00 T. Amtoft: Unfold/Fold Transformations Preserving Termination
Properties
9h30 F. Alexandre: A Technique for Transforming Logic Programs by
Fold-Unfold Transformations
10h00 J. Henrard, B. Le Charlier: FOLON : An Environment for Declarative
Construction of Logic Programs
10h30 Coffee Break
Session: Implementation II
11h00 W. Hans: A Complete Indexing Scheme for WAM-based Abstract Machines
11h30 A. Krall, T. Berger: Fast Prolog with a VAM1p based Prolog Compiler
12h00 C. Holzbaur: Metastructures vs. Attributed Variables in the Context of
Extensible Unification - Applied for the Implementation of CLP Langua@
12h30 Lunch
13h45 Excursion
20h00 Conference Dinner


Friday, August 28
8h30 Invited Talk: P. Cousot: On the Galois Connection and
Widening/Narrowing Approaches in Abstract Interpretation
Session: Abstract Interpretation
9h30 K. Verschaetse, D. De Schreye: Derivation of Linear Size Relations by
Abstract Interpretation
10h00 V. Englebert, B. Le Charlier, D. Roland, P. Van Hentenryck: Generic
Abstract Interpretation Algorithms for Prolog : Two Optimization
Techniques and Their Experimental Evaluation
10h30 Coffee Break
Session: Implementation III
11h00 A. Hui Bon Hoa: A Simple Abstract Interpreter for a Higher-order Logic
Programming Language
11h30 A. M"uck: CAMEL : An Extension of the Categorical Abstract Machine to
Compile Functional / Logic Programs
12h00 W. Hans, R. Loogen, S. Winkler: On the Interaction of Lazy Evaluation
and Backtracking
12h30 Lunch
Session: Debugging
14h00 M. Kamkar, N. Shahmehri, P. Fritzson: Interprocedural Dynamic Slicing
14h30 H. Nilsson, P. Fritzson: Algorithmic Debugging of Lazy Functional
Languages
15h00 M. Ducass'e: A General Trace Query Mechanism Based on Prolog
15h30 Coffee Break
Session: Integration
16h00 J.A. Plaza: Fully Declarative Logic Programming
16h30 G. Lindstrom, J. Ma_luszy'nski, T. Ogi: Our LIPS Are Sealed :
Interfacing Functional and Logic Programming Systems
17h00 M. Alpuente, M. Falaschi, F. Manzo: Analyses of Inconsistency for
Incremental Equational Logic Programming
17h30 S.A. Rebelsky: I/O Trees and I/O Support for Equational Logic
Programming




The Association of Logic Programming has provided a limited number
of grants for graduate students and people from Eastern Europe. Ap-
plications using the enclosed form must reach us before June 22, 1992.


For the local accommodation there are two options. Either you contact
yourself one of the following hotels (the prices include breakfast and
taxes, all the hotels accept American Express, Eurocard/Mastercard
and Visa credit cards):
Hotel Arcade, Brusselsestraat 52-58, 3000 Leuven, tel. (32)16-29.31.11,
fax (32)16-23.87.92, ** hotel with 71 rooms, 2300 BF for a single room
and 2750 BF for a double room (15 minutes walk).
Hotel Begijnhof Congreshotel, Tervuursevest 70, 3000 Leuven, tel. (32)16-
29.10.10, fax (32)16-29.10.22, **** hotel with 67 rooms, 3500 BF for a
single room and 4250 BF for a double room, add. credit card : Diners
Club (20 minutes walk).
Hotel Binnenhof, Maria Theresiastraat 65, 3000 Leuven, tel. (32)16-
20.55.92, fax (32)16-23.69.26, *** hotel with 57 rooms, 2350 BF for a
single room and 2950 BF for a double room, add. credit card : Diners
Club (15 minutes walk).
Hotel Holiday Inn, Alfons Smetsplein 7, 3000 Leuven, tel. (32)16-
29.07.70, fax (32)16-29.12.29, *** hotel with 100 **** rooms, 3800 BF
for a single room and 4200 BF for a double room, add. credit cards :
Diners Club, JCB (2 minutes walk).


Or you stay in a student room for one person (5 minutes walk). We have an
option on 50 rooms which expires on June 22, 1992. The room is like a
hotel room except that toilets and showers have to be shared and that
breakfast is not included (but it is served in a nearby student
restaurant). In the latter case you have to make a reservation using the
enclosed registration form before June 22, 1992. You pay in advance the
fixed price of 3000 BF (500 BF will be refunded on return of the key).
Rooms are available from August 25 (6 pm) till August 29 (10 am).


Social Program
Apart from leisurely enjoying the summer evenings and nights in one or
more of the many Leuven outdoor cafes, the social program includes the
following :


        o Wednesday evening, guided (walking) tours through Leuven are
              organised, including a visit to the University Library bell Tower.
              This tower houses one of the world's largest carillons, which will
              be presented to you by the Leuven town carilloneur. Afterwards,
              you will be able to enjoy a concert on the carillon, specially offered
              to the participants of PLILP 92, from one of the nearby outdoor
              cafes.


        o Thursday afternoon, a bus trip to Limburg (Flandres' "green province")
              is planned, including a visit to the Bokrijk open air museum. Here,
              a number of typical buildings from Flanders' past have been as-
              sembled in the green setting of a beautiful park. Old farms, mills,
              inns, schools, ... with their original interior provide a good impres-
              sion of life in the recent and distant past. Moreover, several inns
              and cafes provide excellent opportunity to sample the wide range
              of famous Belgian beers.


        o The conference dinner on Thursday night takes place in the first
              class University restaurant "Faculty club", situated in the en-
              chanting environment of the medieval "Groot Begijnhof" (great
              beguinage). (Weather permitting, it will probably be an open air
              activity.)
                                          ___________________ ___________
                                        | ___ | | | | ___ | | ___ |___ |
                                        | |__|_| | | | |_|_| | |_|_|__|_|
                                        | | | | | | |____ |____|
                                        | ____|_| | |____ | ____|_||___
                                        |_|______|_|_____|_|_|_____|____|




August 26-28, 1992


                                                Registration form




Last Name ............................ First Name .............


Affiliation .....................................................


Postal address ..................................................


                              ..................................................


e-mail address ............... Telephone number ...............


                                                                Fax number ..........




  Registration fee includes :
                lunches, excursion, conference dinner and proceedings.
I will have vegetarian meals. Yes/No
  Early registrations (received before June 22) ... x 8500 BF = ... BF
  Late Registrations ... x 10000 BF = ... BF
  Extra proceedings ... x 1200 BF = ... BF
  Extra excursion tickets (limited number) ... x 400 BF = ... BF
  Extra dinner tickets ... x 2000 BF = ... BF
  I want to stay at a student room ... x 3000 BF = ... BF
  and pay now a fixed price for the whole stay.
  Date of Birth ................ Nationality ................


(!!! Reservations for student rooms must reach us before June 22, 1992)




  Total cost ... BF


Either include a bankers draft or Euro-check in Belgian Franks or fill in the
form below.


______________________________________________________________________________


CREDIT CARD REGISTRATION


Type (please circle one). VISA MASTERCARD


Card Number : .......... .......... Expiration Date : ..........


Name as it appears on the card : ...............................


Authorised Signature ...........................................






Send to : Brigitte Gelders, PLILP 92,
                          Department of Computer Science, K.U.Leuven
                          Celestijnenlaan 200A, B-3001 Heverlee, Belgium
                          Tel. : (32)-16-20 10 15 extension 3640
                          Fax : (32)-16-20 53 08
______________________________________________________________________________
                                          ___________________ ___________
                                        | ___ | | | | ___ | | ___ |___ |
                                        | |__|_| | | | |_|_| | |_|_|__|_|
                                        | | | | | | |____ |____|
                                        | ____|_| | |____ | ____|_||___
                                        |_|______|_|_____|_|_|_____|____|


August 26-28, 1992


                                            Grant application form


                                            Deadline : June 22, 1992


We have a limited number of grants, financed by the Association for Logic Pro-
gramming, for graduate students and people form Eastern Europe. Priority will
be given to authors of papers. The grants are paid at the symposium.






Last Name ....................................First Name ..................


Affiliation ..................................................................


Postal address ...............................................................


                              ...............................................................


e-mail address ......................Telephone number ......................


                                                                                    Fax number .......................






Motivation for request :




















  Send to : Brigitte Gelders, PLILP 92,
                        Department of Computer Science, K.U.Leuven
                        Celestijnenlaan 200A
                        B-3001 Heverlee, Belgium.
                        Tel.: (32)-16-20 10 15 extension 3640
                        Fax : (32)-16-20 53 08
--

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