2 Search Results for "Sadrzadeh, Mehrnoosh"


Document
Invited Paper
Principles of Natural Language, Logic, and Tensor Semantics (Invited Paper)

Authors: Mehrnoosh Sadrzadeh

Published in: LIPIcs, Volume 139, 8th Conference on Algebra and Coalgebra in Computer Science (CALCO 2019)


Abstract
Residuated monoids model the structure of sentences. Vectors provide meaning representations for words. A functorial mapping between the two is obtained by lifting the vectors to tensors. The resulting sentence representations solve similarity, disambiguation and entailment tasks.

Cite as

Mehrnoosh Sadrzadeh. Principles of Natural Language, Logic, and Tensor Semantics (Invited Paper). In 8th Conference on Algebra and Coalgebra in Computer Science (CALCO 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 139, pp. 3:1-3:4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)


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@InProceedings{sadrzadeh:LIPIcs.CALCO.2019.3,
  author =	{Sadrzadeh, Mehrnoosh},
  title =	{{Principles of Natural Language, Logic, and Tensor Semantics}},
  booktitle =	{8th Conference on Algebra and Coalgebra in Computer Science (CALCO 2019)},
  pages =	{3:1--3:4},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-120-7},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{139},
  editor =	{Roggenbach, Markus and Sokolova, Ana},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CALCO.2019.3},
  URN =		{urn:nbn:de:0030-drops-114312},
  doi =		{10.4230/LIPIcs.CALCO.2019.3},
  annote =	{Keywords: Residuated Monoids, Vector Space Semantics, Corpora of Textual Data, Sentence Similarity and Disambiguation}
}
Document
Open System Categorical Quantum Semantics in Natural Language Processing

Authors: Robin Piedeleu, Dimitri Kartsaklis, Bob Coecke, and Mehrnoosh Sadrzadeh

Published in: LIPIcs, Volume 35, 6th Conference on Algebra and Coalgebra in Computer Science (CALCO 2015)


Abstract
Originally inspired by categorical quantum mechanics (Abramsky and Coecke, LiCS'04), the categorical compositional distributional model of natural language meaning of Coecke, Sadrzadeh and Clark provides a conceptually motivated procedure to compute the meaning of a sentence, given its grammatical structure within a Lambek pregroup and a vectorial representation of the meaning of its parts. Moreover, just like CQM allows for varying the model in which we interpret quantum axioms, one can also vary the model in which we interpret word meaning. In this paper we show that further developments in categorical quantum mechanics are relevant to natural language processing too. Firstly, Selinger's CPM-construction allows for explicitly taking into account lexical ambiguity and distinguishing between the two inherently different notions of homonymy and polysemy. In terms of the model in which we interpret word meaning, this means a passage from the vector space model to density matrices. Despite this change of model, standard empirical methods for comparing meanings can be easily adopted, which we demonstrate by a small-scale experiment on real-world data. Secondly, commutative classical structures as well as their non-commutative counterparts that arise in the image of the CPM-construction allow for encoding relative pronouns, verbs and adjectives, and finally, iteration of the CPM-construction, something that has no counterpart in the quantum realm, enables one to accommodate both entailment and ambiguity.

Cite as

Robin Piedeleu, Dimitri Kartsaklis, Bob Coecke, and Mehrnoosh Sadrzadeh. Open System Categorical Quantum Semantics in Natural Language Processing. In 6th Conference on Algebra and Coalgebra in Computer Science (CALCO 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 35, pp. 270-289, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)


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@InProceedings{piedeleu_et_al:LIPIcs.CALCO.2015.270,
  author =	{Piedeleu, Robin and Kartsaklis, Dimitri and Coecke, Bob and Sadrzadeh, Mehrnoosh},
  title =	{{Open System Categorical Quantum Semantics in Natural Language Processing}},
  booktitle =	{6th Conference on Algebra and Coalgebra in Computer Science (CALCO 2015)},
  pages =	{270--289},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-84-2},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{35},
  editor =	{Moss, Lawrence S. and Sobocinski, Pawel},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CALCO.2015.270},
  URN =		{urn:nbn:de:0030-drops-55398},
  doi =		{10.4230/LIPIcs.CALCO.2015.270},
  annote =	{Keywords: category theory, density matrices, distributional models, semantics}
}
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