Asymmetric Item-Item Similarity Measure for Linked Open Data Enabled Collaborative Filtering

2017 ◽  
Author(s):  
Chengwang Mao ◽  
Zhuoming Xu ◽  
Xiuli Wang
Keyword(s):  
Collaborative Filtering ◽  
Similarity Measure ◽  
Open Data ◽  
Linked Open Data ◽  
Item Item

Combining Linked Open Data Similarity and Relatedness for Cross OSN Recommendation

2020 ◽  
Vol 16 (2) ◽  
pp. 59-90
Author(s):  
Mohamed Boubenia ◽  
Abdelkader Belkhir ◽  
Fayçal M'hamed Bouyakoub
Keyword(s):  
Social Networks ◽  
Recommender Systems ◽  
Similarity Measure ◽  
Online Social Networks ◽  
Experimental Evaluation ◽  
Open Data ◽  
Linked Open Data ◽  
Cross Domain ◽  
Data Similarity ◽  
New Generation

The emergence of online social networks (OSNs) and linked open data (LOD) bring up opportunities to experiment on a new generation of cross-domain recommender systems in which the true benefit of LOD can be exploited, particularly to address the new user problems. In this article, the authors explore the feasibility of combining the two axes of comparison, similarity and relatedness, in LOD space, and introduce a new LOD-based similarity measure. The reason is to take benefit more from LOD to compare general resources, which can be useful in the context of cross-OSN recommendation. Experimental evaluation demonstrates the effectiveness of the proposed approach.

Resolving data sparsity and cold start problem in collaborative filtering recommender system using Linked Open Data

2020 ◽  
Vol 149 ◽  
pp. 113248 ◽  
Author(s):  
Senthilselvan Natarajan ◽  
Subramaniyaswamy Vairavasundaram ◽  
Sivaramakrishnan Natarajan ◽  
Amir H. Gandomi
Keyword(s):  
Collaborative Filtering ◽  
Recommender System ◽  
Open Data ◽  
Cold Start ◽  
Linked Open Data ◽  
Data Sparsity ◽  
Cold Start Problem

scholarly journals Improving the Spatial Keyword Preference Query with Linked Open Data

2018 ◽  
Author(s):  
João Paulo Dias De Almeida ◽  
Frederico Araújo Durão
Keyword(s):  
Similarity Measure ◽  
Spatial Databases ◽  
Open Data ◽  
Spatial Relationship ◽  
Linked Open Data ◽  
Inverted Index ◽  
Object Description ◽  
Textual Description ◽  
Preference Query ◽  
The One

This paper presents a Spatial Keyword Preference Query (SKPQ) enhanced by Linked Open Data. This query selects objects based on the textual description of features in their neighborhood. The spatial relationship between objects and features is explored by the SKPQ using a Spatial Inverted Index. In our approach, the spatial relationship is explored using SPARQL. However, the main benefit of using SPARQL is obtained by measuring the textual relevance between features’ description and user’s keywords. The object description in Linked Open Data is much richer than traditional spatial databases, which leads to a more precise similarity measure than the one employed in the traditional SKPQ. We present an enhanced SKPQ and two experimental evaluations of the proposed approach, comparing it with the traditional SKPQ. The first conducted experiment indicate a relative NDCG improvement of the proposed approach over the traditional SKPQ of 20% when using random query keywords. The second experiment shows that using real query keywords, our approach obtained a significant increase in the MAP score.

Europeana no Linked Open Data: conceitos de Web Semântica na dimensão aplicada das humanidades digitais

2017 ◽  
Vol 12 (2) ◽  
Author(s):  
Caio Saraiva Coneglian ◽  
José Eduardo Santarem Segundo
Keyword(s):  
Linked Data ◽  
Open Data ◽  
Linked Open Data

O surgimento de novas tecnologias, tem introduzido meios para a divulgação e a disponibilização das informações mais eficientemente. Uma iniciativa, chamada de Europeana, vem promovendo esta adaptação dos objetos informacionais dentro da Web, e mais especificamente no Linked Data. Desta forma, o presente estudo tem como objetivo apresentar uma discussão acerca da relação entre as Humanidades Digitais e o Linked Open Data, na figura da Europeana. Para tal, utilizamos uma metodologia exploratória e que busca explorar as questões relacionadas ao modelo de dados da Europeana, EDM, por meio do SPARQL. Como resultados, compreendemos as características do EDM, pela utilização do SPARQL. Identificamos, ainda, a importância que o conceito de Humanidades Digitais possui dentro do contexto da Europeana.Palavras-chave: Web semântica. Linked open data. Humanidades digitais. Europeana. EDM.Link: https://periodicos.ufsc.br/index.php/eb/article/view/1518-2924.2017v22n48p88/33031

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