Web Directory

» A Differential Approach to Graphical Interaction
   The ad hoc manner in which direct manipulation interfaces have been designed and implemented restricts the types of interactive controls. This dissertation presents a new approach for a systematic method to implement flexible, combinable interactive contr
   http://www.cs.wisc.edu/graphics/Papers/Gleicher/Thesis/

» Advanced Constraint Techniques for User Interface Implementation
   Project to develop and explore using advanced constraint methods to make user interface software. Constraints as a general computational technique allow declaring a set of relationships between entities. A constraint satisfaction system is employed to aut
   http://cslu.cse.ogi.edu/nsf/isgw97/reports/hudson.html

» Book: Foundations of Constraint Satisfaction
   Description of book, Academic Press, release 1993: programs from book.
   http://www.bracil.net/edward/FCS.html

» Book: Programming with Constraints: an Introduction
   Description of book, MIT Press, release March 1998: programs from book, slides for courses for use with book.
   http://www.cs.mu.oz.au/~pjs/book/book.html

» Brandeis Interval Arithmetic Constraint Solver
   Java applet that solves non-linear real arithmetic constraints.
   http://www.cs.brandeis.edu/~tim/Applets/IAsolver.html

» Cassowary
   Incremental constraint solving toolkit, efficiently solves systems of linear equalities, inequalities. Constraints can be requirements or preferences. Client code specifies constraints to maintain, and the solver updates constrained variables to have valu
   http://www.cs.washington.edu/research/constraints/cassowary/

» Constraint Handling Rules: CHR
   High-level programming language to write constraint systems; makes it easy to define constraint reasoning: simplification and propagation, and incremental solving (satisfaction) of constraints. Run and test CHR online; do a demo, try it now.
   http://www.cs.kuleuven.be/~dtai/projects/CHR/

» Constraint-based Languages and Environments for Building Interactive Systems
   Page about Alan Borning, a leading researcher in the field. From NSF conference ISGW '97: Interactive Systems Grantees Workshop.
   http://cslu.cse.ogi.edu/nsf/isgw97/reports/borning.html

» Constraints for the Web
   Constraints can specify desired layout of web documents, and behavior of embedded applets: 2 system architectures where author and viewer can make layout constraints, needed and optional. Final appearance of page comes from negotiation between author and
   http://www.cs.washington.edu/research/constraints/web/mm97.dir/

» Constraints: An International Journal
   Covering all aspects of computing with constraints; on paper or online; fee required.
   http://www.springer.com/computer/artificial/journal/10601

» DeltaBlue Code Archive
   For incremental dataflow constraint solver, implemented in varied languages, each in a subdirectory named after the language: C DEC, C SUN4; Common Lisp, Smalltalk.
   ftp://ftp.cs.washington.edu/pub/constraints/code/DeltaBlue/

» DeltaBlue Constraint Solver
   Efficient, incremental local propagation constraint solver. Like most local propagation algorithms, it cannot accommodate cyclic constraints. University of Washington site.
   http://www.cs.washington.edu/research/constraints/deltablue/

» DeltaBlue: Benchmarking Java with Richards and DeltaBlue
   Constraint solver benchmark, in Java; about 1000 lines of code. DeltaBlue first implemented by John Maloney at University of Washington, translated to many languages: C, C++, Java; Smalltalk. [Sun Microsystems Labs]
   http://research.sun.com/people/mario/java_benchmarking/

» E-constraints.net
   Home of Explanation-based Constraint Programming. Definitions, applications, libraries, links.
   http://www.e-constraints.net/

» Garnet Project
   Generating an Amalgam of Real-time, Novel Editors and Toolkits; developed by User Interface Software Group, Human Computer Interaction Institute, School of Computer Science, Carnegie Mellon University. Free: public domain.
   http://www.cs.cmu.edu/~garnet/

» Garnet Toolkit FAQ
   Frequently Asked Questions about Garnet user interface development environment for Common Lisp and X11 or Macintosh developed by User Interface Software Group, Human-Computer Interaction Institute, Carnegie Mellon University.
   http://www.faqs.org/faqs/garnet-faq/

» Garnet: Brad A. Myers
   Personal page of Garnet inventor and lead researcher. Describes Garnet motives, rationale.
   http://www.cs.cmu.edu/~bam/

» Garnet: Multi-Garnet: Integrating Multi-Way Constraints with Garnet
   ResearchIndex: Constraints provide a useful mechanism to maintain relations in user interface toolkits. Garnet is a widely used user interface toolkit with high functionality, based on one way, required constraints. Multi-Garnet extends this by adding sup
   http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.53.6287

» Gecode
   Generic Constraint Development Environment. Constraint solver implemented as C++ library. Main goals: modifiability, extensibility, speed. Features: integer and set variables, large constraint set, copying-based search. [Open Source, BSD]
   http://www.gecode.org/

» Guide to Constraint Programming
   Online tutorial/textbook for beginners to the area of constraint programming. This area is of the set of less known software technologies, but is evolving rapidly and has a growing, significant commercial interest.
   http://ktiml.mff.cuni.cz/~bartak/constraints/

» ICOT Free Software
   Free constraint software developed by Institute for New Generation Computer Technology (ICOT), Japan: Constraint MGTP (CMGTP) model generation theorem prover (MGTP), MGTP-G, KLIC, some cu-Prologs, and documents. FTP site.
   ftp://ftp.icot.or.jp/ifs/

» ILOG CP
   Constraint-programming optimization engine, providing cutting-edge optimization technology and an optimization library for workforce scheduling, league scheduling, sequencing, configuration, dispatching and resource-allocation applications with logical co
   http://www.ilog.com/products/cp/

» MAC and Combined Heuristics: Two Reasons to Forsake FC (and CBJ?) on Hard Problems
   ResearchIndex: In the last 20 years, many algorithms and heuristics were developed to find solutions in constraint networks. Their number increased so much that it quickly became vital to compare performance to propose a small number of good methods.
   http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.56.4042

» Natural Programming
   Attempt to make a system that is easier to learn and use than anything available to novice programmers today: HANDS: Human-centered Advances for Novice Development of Software. School of Computer Science, Carnegie Mellon University; NSF funded.
   http://www.cs.cmu.edu/~NatProg/

» Omega Project
   Frameworks and algorithms for analyzing and transforming scientific programs; 2 major components: the Omega test system to manipulate sets of affine constraints over integer variables; and developing frameworks to analyze and transform programs.
   http://www.cs.umd.edu/projects/omega/

» Pascal Van Hentenryck
   Brown University, US. Some constraint papers.
   http://www.cs.brown.edu/people/pvh/

» ResearchIndex: Kaleidoscope: A Constraint Imperative Programming Language
   The Constraint Imperative Programming CIP family of languages integrates constraints and imperative, object oriented programming. Besides merging useful features of both paradigms, such integration has synergistic effects.
   http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.18.1523

» Seventh International Conference on Principles and Practice of Constraint Programming
   2001 November 26 - December 1, Paphos, Cyprus.
   http://www2.cs.ucy.ac.cy/~iclpcp01/CP01home.html

» StarFLIP++
   Free, reusable iterative optimization library for combinatorial problems with fuzzy constraints. GNU LGPL.
   http://www.dbai.tuwien.ac.at/proj/StarFLIP/

» Techno-Pulsar
   Potent new optimization technology for multidimensional optimization practical problems with continuous, breaking nondifferentiative and stochastic goal functions, 100 or more variables, cuts the cost and time to creation of new technical systems.
   http://www.orc.ru/~pulsar/

» ThingLabII: Constraint-based user interfaces
   Supports exploration of constraint-based user interfaces; consists of a set of classes that define constraints and constrainable objects called things. Incremental constraint satisfier, module compiler, construction-set style user interface, many tools, e
   http://www.cs.cmu.edu/afs/cs/project/ai-repository/ai/areas/constrnt/systems/thinglab/0.html

» University of Washington: Constraint-Based Systems
   Constraints research group, Department of Computer Science and Engineering. Home of DeltaBlue, Cassowary. Neat constraint Java Applet demonstrates a theorem about quadrilaterals.
   http://www.cs.washington.edu/research/constraints/