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Documents authored by Tarau, Paul

Document
Complete Volume
DOI: 10.4230/OASIcs.ICLP.2018
OASIcs, Volume 64, ICLP'18, Complete Volume

Authors: Alessandro Dal Palu', Paul Tarau, Neda Saeedloei, and Paul Fodor

Published in: OASIcs, Volume 64, Technical Communications of the 34th International Conference on Logic Programming (ICLP 2018)

Abstract
OASIcs, Volume 64, ICLP'18, Complete Volume
Cite as

Technical Communications of the 34th International Conference on Logic Programming (ICLP 2018). Open Access Series in Informatics (OASIcs), Volume 64, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@Proceedings{dalpalu_et_al:OASIcs.ICLP.2018,
  title =	{{OASIcs, Volume 64, ICLP'18, Complete Volume}},
  booktitle =	{Technical Communications of the 34th International Conference on Logic Programming (ICLP 2018)},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-090-3},
  ISSN =	{2190-6807},
  year =	{2018},
  volume =	{64},
  editor =	{Dal Palu', Alessandro and Tarau, Paul and Saeedloei, Neda and Fodor, Paul},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.ICLP.2018},
  URN =		{urn:nbn:de:0030-drops-98979},
  doi =		{10.4230/OASIcs.ICLP.2018},
  annote =	{Keywords: Software and its engineering, Constraint and logic languages, Theory of computation, Logic, Constraint and logic programming}
}
Document
Front Matter
DOI: 10.4230/OASIcs.ICLP.2018.0
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Alessandro Dal Palu', Paul Tarau, Neda Saeedloei, and Paul Fodor

Published in: OASIcs, Volume 64, Technical Communications of the 34th International Conference on Logic Programming (ICLP 2018)

Abstract
Front Matter, Table of Contents, Preface, Conference Organization
Cite as

Technical Communications of the 34th International Conference on Logic Programming (ICLP 2018). Open Access Series in Informatics (OASIcs), Volume 64, pp. 0:i-0:x, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{dalpalu_et_al:OASIcs.ICLP.2018.0,
  author =	{Dal Palu', Alessandro and Tarau, Paul and Saeedloei, Neda and Fodor, Paul},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{Technical Communications of the 34th International Conference on Logic Programming (ICLP 2018)},
  pages =	{0:i--0:x},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-090-3},
  ISSN =	{2190-6807},
  year =	{2018},
  volume =	{64},
  editor =	{Dal Palu', Alessandro and Tarau, Paul and Saeedloei, Neda and Fodor, Paul},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.ICLP.2018.0},
  URN =		{urn:nbn:de:0030-drops-98669},
  doi =		{10.4230/OASIcs.ICLP.2018.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
DOI: 10.4230/OASIcs.ICLP.2017.10
A Hitchhiker's Guide to Reinventing a Prolog Machine

Authors: Paul Tarau

Published in: OASIcs, Volume 58, Technical Communications of the 33rd International Conference on Logic Programming (ICLP 2017)

Abstract
We take a fresh, "clean-room" look at implementing Prolog by deriving its translation to an executable representation and its execution algorithm from a simple Horn Clause meta-interpreter. The resulting design has some interesting properties. The heap representation of terms and the abstract machine instruction encodings are the same. No dedicated code area is used as the code is placed directly on the heap. Unification and indexing operations are orthogonal. Filtering of matching clauses happens without building new structures on the heap. Variables in function and predicate symbol positions are handled with no performance penalty. A simple English-like syntax is used as an intermediate representation for clauses and goals and the same simple syntax can be used by programmers directly as an alternative to classic Prolog syntax. Solutions of (multiple) logic engines are exposed as answer streams that can be combined through typical functional programming patterns, with flexibility to stop, resume, encapsulate and interleave executions. Performance of a basic interpreter implementing our design is within a factor of 2 of a highly optimized compiled WAM-based system using the same host language. To help placing our design on the fairly rich map of Prolog systems, we discuss similarities to existing Prolog abstract machines, with emphasis on separating necessary commonalities from arbitrary implementation choices.
Cite as

Paul Tarau. A Hitchhiker's Guide to Reinventing a Prolog Machine. In Technical Communications of the 33rd International Conference on Logic Programming (ICLP 2017). Open Access Series in Informatics (OASIcs), Volume 58, pp. 10:1-10:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{tarau:OASIcs.ICLP.2017.10,
  author =	{Tarau, Paul},
  title =	{{A Hitchhiker's Guide to Reinventing a Prolog Machine}},
  booktitle =	{Technical Communications of the 33rd International Conference on Logic Programming (ICLP 2017)},
  pages =	{10:1--10:16},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-058-3},
  ISSN =	{2190-6807},
  year =	{2018},
  volume =	{58},
  editor =	{Rocha, Ricardo and Son, Tran Cao and Mears, Christopher and Saeedloei, Neda},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.ICLP.2017.10},
  URN =		{urn:nbn:de:0030-drops-84537},
  doi =		{10.4230/OASIcs.ICLP.2017.10},
  annote =	{Keywords: Prolog abstract machines, heap representation of terms and code, immutable goal stacks, natural language syntax for clauses, answer streams, multi-arg}
}
Document
DOI: 10.4230/LIPIcs.ICLP.2012.312
Deriving a Fast Inverse of the Generalized Cantor N-tupling Bijection

Authors: Paul Tarau

Published in: LIPIcs, Volume 17, Technical Communications of the 28th International Conference on Logic Programming (ICLP'12) (2012)

Abstract
We attack an interesting open problem (an efficient algorithm to invert the generalized Cantor N-tupling bijection) and solve it through a sequence of equivalence preserving transformations of logic programs, that take advantage of unique strengths of this programming paradigm. An extension to set and multiset tuple encodings, as well as a simple application to a "fair-search" mechanism illustrate practical uses of our algorithms. The code in the paper (a literate Prolog program, tested with SWI-Prolog and Lean Prolog) is available at http://logic.cse.unt.edu/tarau/research/2012/pcantor.pl .
Cite as

Paul Tarau. Deriving a Fast Inverse of the Generalized Cantor N-tupling Bijection. In Technical Communications of the 28th International Conference on Logic Programming (ICLP'12). Leibniz International Proceedings in Informatics (LIPIcs), Volume 17, pp. 312-322, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2012)

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@InProceedings{tarau:LIPIcs.ICLP.2012.312,
  author =	{Tarau, Paul},
  title =	{{Deriving a Fast Inverse of the Generalized Cantor N-tupling Bijection}},
  booktitle =	{Technical Communications of the 28th International Conference on Logic Programming (ICLP'12)},
  pages =	{312--322},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-43-9},
  ISSN =	{1868-8969},
  year =	{2012},
  volume =	{17},
  editor =	{Dovier, Agostino and Santos Costa, V{\'\i}tor},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ICLP.2012.312},
  URN =		{urn:nbn:de:0030-drops-36326},
  doi =		{10.4230/LIPIcs.ICLP.2012.312},
  annote =	{Keywords: generalized Cantor n-tupling bijection, bijective data type transformations, combinatorial number system, solving combinatorial problems in Prolog, op}
}
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