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Explicit versus implicit job interests for recommendation: A job recommender system for the Flemish governmental employment services

Explicit versus implicit job interests for recommendation: A job recommender system for the Flemish governmental employment services
Explicit versus implicit job interests for recommendation: A job recommender system for the Flemish governmental employment services
Recommender systems have proven to be a valuable tool in many online applications. However, the multitude of user related data types and recommender system algorithms makes it difficult for decision makers to choose the best combination for their specific business goals. Through a case study on job recommender systems in collaboration with the Flemish public employment services (VDAB), we evaluate what data types are most indicative of job seekers' vacancy interests, and how this impacts the appropriateness of the different types of recommender systems for job recommendation. We show that implicit feedback data covers a broader spectrum of job seekers' job interests than explicitly stated interests. Based on this insight we present a user-user collaborative filtering system solely based on this implicit feedback data. Our experiments show that this system outperforms the extensive knowledge-based recommender system currently employed by VDAB in both offline and expert evaluation. Furthermore, this study contributes to the existing recommender system literature by showing that, even in high risk recommendation contexts such as job recommendation, organizations should not only hang on to explicit feedback recommender systems but should embrace the value and abundance of available implicit feedback data.
0167-9236
26-35
Reusens, M.
0862d2a5-371b-4662-9096-cc8545391c25
Lemahieu, W.
64edd1f1-373c-48dd-9129-89f081d0e482
Baesens, B.
f7c6496b-aa7f-4026-8616-ca61d9e216f0
Sels, L.
3466cd61-939e-4b17-bc5c-7acf7b920888
Reusens, M.
0862d2a5-371b-4662-9096-cc8545391c25
Lemahieu, W.
64edd1f1-373c-48dd-9129-89f081d0e482
Baesens, B.
f7c6496b-aa7f-4026-8616-ca61d9e216f0
Sels, L.
3466cd61-939e-4b17-bc5c-7acf7b920888

Reusens, M., Lemahieu, W., Baesens, B. and Sels, L. (2017) Explicit versus implicit job interests for recommendation: A job recommender system for the Flemish governmental employment services. Decision Support Systems, 98, 26-35. (doi:10.1016/j.dss.2017.04.002).

Record type: Article

Abstract

Recommender systems have proven to be a valuable tool in many online applications. However, the multitude of user related data types and recommender system algorithms makes it difficult for decision makers to choose the best combination for their specific business goals. Through a case study on job recommender systems in collaboration with the Flemish public employment services (VDAB), we evaluate what data types are most indicative of job seekers' vacancy interests, and how this impacts the appropriateness of the different types of recommender systems for job recommendation. We show that implicit feedback data covers a broader spectrum of job seekers' job interests than explicitly stated interests. Based on this insight we present a user-user collaborative filtering system solely based on this implicit feedback data. Our experiments show that this system outperforms the extensive knowledge-based recommender system currently employed by VDAB in both offline and expert evaluation. Furthermore, this study contributes to the existing recommender system literature by showing that, even in high risk recommendation contexts such as job recommendation, organizations should not only hang on to explicit feedback recommender systems but should embrace the value and abundance of available implicit feedback data.

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Accepted/In Press date: 4 April 2017
e-pub ahead of print date: 7 April 2017
Published date: June 2017

Identifiers

Local EPrints ID: 413693
URI: https://eprints.soton.ac.uk/id/eprint/413693
ISSN: 0167-9236
PURE UUID: bd081af7-5ab4-4744-8cbf-6cbd6b37fc8e
ORCID for B. Baesens: ORCID iD orcid.org/0000-0002-5831-5668

Catalogue record

Date deposited: 31 Aug 2017 16:31
Last modified: 17 Sep 2019 00:51

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