Oxford English Dictionary

L’Oxford English Dictionary (OED) est un dictionnaire de référence pour la langue anglaise. Il est publié par l'Oxford University Press et contient des mots venant du Royaume-Uni et des diverses régions du monde anglophone : Amérique du Nord, Afrique du Sud, Australie, Nouvelle-Zélande, Caraïbes. Il indique l'histoire, la prononciation et la définition des mots. Comme pour d'autres grands dictionnaires, le travail de rédaction s'est étalé sur plusieurs décennies. La première édition complète, comprenant vingt tomes, est publiée en 1928. Il est depuis régulièrement remis à jour. L'Oxford University Press édite également une version abrégée de ce dictionnaire en deux volumes, le Shorter Oxford English Dictionary, et de nombreux dictionnaires monolingues pour les étudiants étrangers, comme l’Oxford Advanced Learner's Dictionary, ou encore, en collaboration avec Hachette, divers dictionnaires bilingues français-anglais, anglais-français. Éditeurs

Herbert Coleridge (1857-1

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Problems and Procedures to Make Wordnet Data (Retro)Fit for a Multilingual Dictionary

Martin Benjamin

The data compiled through many Wordnet projects can be a rich source of seed information for a multilingual dictionary. However, the original Princeton WordNet was not intended as a dictionary per se, and spawning other languages from it introduces inherent ambiguity that confounds precise inter-lingual linking. This paper discusses a new presentation of existing Wordnet data that displays joints (distance between predicted links) and substitution (degree of equivalence between confirmed pairs) as a two-tiered horizontal ontology. Improvements to make Wordnet data function as lexicography include term-specific English definitions where the topical synset glosses are inadequate, validation of mappings between each member of an English synset and each member of the synsets from other languages, removal of erroneous translation terms, creation of own-language definitions for the many languages where those are absent, and validation of predicted links between non- English pairs. The paper describes the current state and future directions of a system to crowdsource human review and expansion of Wordnet data, using gamification to build consensus validated, dictionary caliber data for languages now in the Global WordNet as well as new languages that do not have formal Wordnet projects of their own.

Alexandru Ioan Cuza University of Iasi2016

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Problems and Procedures to Make Wordnet Data (Retro)Fit for a Multilingual Dictionary

Martin Benjamin

The data compiled through many Wordnet projects can be a rich source of seed information for a multilingual dictionary. However, the original Princeton WordNet was not intended as a dictionary per se, and spawning other languages from it introduces inherent ambiguity that confounds precise inter-lingual linking. This paper discusses a new presentation of existing Wordnet data that displays joints (distance between predicted links) and substitution (degree of equivalence between confirmed pairs) as a two-tiered horizontal ontology. Improvements to make Wordnet data function as lexicography include term-specific English definitions where the topical synset glosses are inadequate, validation of mappings between each member of an English synset and each member of the synsets from other languages, removal of erroneous translation terms, creation of own-language definitions for the many languages where those are absent, and validation of predicted links between non-English pairs. The paper describes the current state and future directions of a system to crowdsource human review and expansion of Wordnet data, using gamification to build consensus validated, dictionary caliber data for languages now in the Global WordNet as well as new languages that do not have formal Wordnet projects of their own.

2016

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Dictionary Compression in Point Cloud Data Management

Anastasia Ailamaki, Mirjana Pavlovic

Nowadays, massive amounts of point cloud data can be collected thanks to advances in data acquisition and processing technologies such as dense image matching and airborne LiDAR scanning. With the increase in volume and precision, point cloud data offers a useful source of information for natural-resource management, urban planning, self-driving cars, and more. At the same time, on the scale that point cloud data is produced, management challenges are introduced: it is important to achieve efficiency both in terms of querying performance and space requirements. Traditional file-based solutions to point cloud management offer space efficiency, however, they cannot scale to such massive data and provide the declarative power of a DBMS. In this article, we propose a time- and space-efficient solution to storing and managing point cloud data in main memory column-store DBMS. Our solution, Space-Filling Curve Dictionary-Based Compression (SFC-DBC), employs dictionary-based compression in the spatial data management domain and enhances it with indexing capabilities by using space-filling curves. SFC-DBC does so by constructing the space-filling curve over a compressed, artificially introduced dictionary space. Consequently, SFC-DBC significantly optimizes query execution and yet does not require additional storage resources, compared to traditional dictionary-based compression. With respect to space-filling-curve-based approaches, it minimizes storage footprint and increases resilience to skew. As a proof of concept, we develop and evaluate our approach as a research prototype in the context of SAP HANA. SFC-DBC outperforms other dictionary-based compression schemes by up to 61% in terms of space and up to 9.4x in terms of query performance.

ASSOC COMPUTING MACHINERY2019

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