A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]

Background: A recommender system captures the user preferences and behaviour to provide a relevant recommendation to the user. In a hybrid model-based recommender system, it requires a pre-trained data model to generate recommendations for a user. Ontology helps to represent the semantic information...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Lit-Jie Chew, Su-Cheng Haw, Samini Subramaniam
Formato:	article
Lenguaje:	EN
Publicado:	F1000 Research Ltd 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/14202df600cb449989180a953ab740f0
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:14202df600cb449989180a953ab740f0
record_format	dspace
spelling	oai:doaj.org-article:14202df600cb449989180a953ab740f02021-11-29T14:03:15ZA hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]2046-140210.12688/f1000research.73060.1https://doaj.org/article/14202df600cb449989180a953ab740f02021-09-01T00:00:00Zhttps://f1000research.com/articles/10-937/v1https://doaj.org/toc/2046-1402Background: A recommender system captures the user preferences and behaviour to provide a relevant recommendation to the user. In a hybrid model-based recommender system, it requires a pre-trained data model to generate recommendations for a user. Ontology helps to represent the semantic information and relationships to model the expressivity and linkage among the data. Methods: We enhanced the matrix factorization model accuracy by utilizing ontology to enrich the information of the user-item matrix by integrating the item-based and user-based collaborative filtering techniques. In particular, the combination of enriched data, which consists of semantic similarity together with rating pattern, will help to reduce the cold start problem in the model-based recommender system. When the new user or item first coming into the system, we have the user demographic or item profile that linked to our ontology. Thus, semantic similarity can be calculated during the item-based and user-based collaborating filtering process. The item-based and user-based filtering process are used to predict the unknown rating of the original matrix. Results: Experimental evaluations have been carried out on the MovieLens 100k dataset to demonstrate the accuracy rate of our proposed approach as compared to the baseline method using (i) Singular Value Decomposition (SVD) and (ii) combination of item-based collaborative filtering technique with SVD. Experimental results demonstrated that our proposed method has reduced the data sparsity from 0.9542% to 0.8435%. In addition, it also indicated that our proposed method has achieved better accuracy with Root Mean Square Error (RMSE) of 0.9298, as compared to the baseline method (RMSE: 0.9642) and the existing method (RMSE: 0.9492). Conclusions: Our proposed method enhanced the dataset information by integrating user-based and item-based collaborative filtering techniques. The experiment results shows that our system has reduced the data sparsity and has better accuracy as compared to baseline method and existing method.Lit-Jie ChewSu-Cheng HawSamini SubramaniamF1000 Research LtdarticleMedicineRScienceQENF1000Research, Vol 10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lit-Jie Chew Su-Cheng Haw Samini Subramaniam A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]
description	Background: A recommender system captures the user preferences and behaviour to provide a relevant recommendation to the user. In a hybrid model-based recommender system, it requires a pre-trained data model to generate recommendations for a user. Ontology helps to represent the semantic information and relationships to model the expressivity and linkage among the data. Methods: We enhanced the matrix factorization model accuracy by utilizing ontology to enrich the information of the user-item matrix by integrating the item-based and user-based collaborative filtering techniques. In particular, the combination of enriched data, which consists of semantic similarity together with rating pattern, will help to reduce the cold start problem in the model-based recommender system. When the new user or item first coming into the system, we have the user demographic or item profile that linked to our ontology. Thus, semantic similarity can be calculated during the item-based and user-based collaborating filtering process. The item-based and user-based filtering process are used to predict the unknown rating of the original matrix. Results: Experimental evaluations have been carried out on the MovieLens 100k dataset to demonstrate the accuracy rate of our proposed approach as compared to the baseline method using (i) Singular Value Decomposition (SVD) and (ii) combination of item-based collaborative filtering technique with SVD. Experimental results demonstrated that our proposed method has reduced the data sparsity from 0.9542% to 0.8435%. In addition, it also indicated that our proposed method has achieved better accuracy with Root Mean Square Error (RMSE) of 0.9298, as compared to the baseline method (RMSE: 0.9642) and the existing method (RMSE: 0.9492). Conclusions: Our proposed method enhanced the dataset information by integrating user-based and item-based collaborative filtering techniques. The experiment results shows that our system has reduced the data sparsity and has better accuracy as compared to baseline method and existing method.
format	article
author	Lit-Jie Chew Su-Cheng Haw Samini Subramaniam
author_facet	Lit-Jie Chew Su-Cheng Haw Samini Subramaniam
author_sort	Lit-Jie Chew
title	A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]
title_short	A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]
title_full	A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]
title_fullStr	A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]
title_full_unstemmed	A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]
title_sort	hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]
publisher	F1000 Research Ltd
publishDate	2021
url	https://doaj.org/article/14202df600cb449989180a953ab740f0
work_keys_str_mv	AT litjiechew ahybridrecommendersystembasedondataenrichmentontheontologymodellingversion1peerreview2approved1notapproved AT suchenghaw ahybridrecommendersystembasedondataenrichmentontheontologymodellingversion1peerreview2approved1notapproved AT saminisubramaniam ahybridrecommendersystembasedondataenrichmentontheontologymodellingversion1peerreview2approved1notapproved AT litjiechew hybridrecommendersystembasedondataenrichmentontheontologymodellingversion1peerreview2approved1notapproved AT suchenghaw hybridrecommendersystembasedondataenrichmentontheontologymodellingversion1peerreview2approved1notapproved AT saminisubramaniam hybridrecommendersystembasedondataenrichmentontheontologymodellingversion1peerreview2approved1notapproved
_version_	1718407265747206144

A hybrid recommender system based on data enrichment on the ontology modelling [version 1; peer review: 2 approved, 1 not approved]

Ejemplares similares