Search Results for author: Oscar Corcho

Found 13 papers, 8 papers with code

Morph-KGC: Scalable knowledge graph materialization with mapping partitions

1 code implementation Semantic Web 2022 Julián Arenas-Guerrero, David Chaves-Fraga, Jhon Toledo, María S. Pérez, Oscar Corcho

Knowledge graphs are often constructed from heterogeneous data sources, using declarative rules that map them to a target ontology and materializing them into RDF.

Data Integration Knowledge Graphs +1

Efficient Clustering from Distributions over Topics

no code implementations15 Dec 2020 Carlos Badenes-Olmedo, Jose-Luis Redondo García, Oscar Corcho

In this paper, we present an approach that relies on the results of a topic modeling algorithm over the documents in a collection, as a means to identify smaller subsets of documents where the similarity function can then be computed.

Clustering

Scalable Cross-lingual Document Similarity through Language-specific Concept Hierarchies

1 code implementation15 Dec 2020 Carlos Badenes-Olmedo, Jose-Luis Redondo García, Oscar Corcho

With the ongoing growth in number of digital articles in a wider set of languages and the expanding use of different languages, we need annotation methods that enable browsing multi-lingual corpora.

Topic Models Translation

FunMap: Efficient Execution of Functional Mappings for Knowledge Graph Creation

1 code implementation31 Aug 2020 Samaneh Jozashoori, David Chaves-Fraga, Enrique Iglesias, Maria-Esther Vidal, Oscar Corcho

We propose FunMap, an interpreter of function-based mapping languages; it relies on a set of lossless rewriting rules to push down and materialize the execution of functions in initial steps of knowledge graph creation.

Databases

Enhancing Virtual Ontology Based Access over Tabular Data with Morph-CSV

1 code implementation24 Jan 2020 David Chaves-Fraga, Edna Ruckhaus, Freddy Priyatna, Maria-Esther Vidal, Oscar Corcho

In the specific case of tabular datasets represented as several CSV or Excel files, query translation approaches have been applied by considering each source as a single table that can be loaded into a relational database management system (RDBMS).

Databases

Legal document retrieval across languages: topic hierarchies based on synsets

no code implementations28 Nov 2019 Carlos Badenes-Olmedo, Jose-Luis Redondo-Garcia, Oscar Corcho

Cross-lingual annotations of legislative texts enable us to explore major themes covered in multilingual legal data and are a key facilitator of semantic similarity when searching for similar documents.

Retrieval Semantic Similarity +3

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