Abstract
There are currently many job portals offering job positions in the form of job advertisements. In this article, we are proposing an approach to mine data from job advertisements on job portals. Mainly, it would concern job requirements mining from individual job advertisements. Our proposed system consists of a data mining module, a machine learning module, and a postprocessing module. The machine learning module is based on the SDCA logistic regression. The postprocessing module includes several approaches to increase the success rate of the job requirements identification. The proposed system was verified on 20 most searched IT job positions from the selected job portal. In total, 9971 job advertisements were analyzed. Our system’s verification is finding all job requirements in 80% of analyzed advertisements. The detected job requirements were also compared with the Open Skills database. Based on this database and the extension of IT job positions with other typical job skills, we created a list of the most frequent job skills in selected IT job positions. The main contribution is the development of a universal system to detect job requirements in job advertisements. The proposed approach can be used not only for IT positions, but also for various job positions. The presented data mining module can also be used for various job portals.
Highlights
There are currently many job portals offering job positions in the form of job advertisements
The machine learning module is based on the Stochastic dual co-ordinate ascent (SDCA) logistic regression
Our proposed system consists of a data mining module, machine learning module, and postprocessing module
Summary
There are currently many job portals offering job positions in the form of job advertisements. Information in such advertisements and requirements for job applicants are usually structured in a certain way. Some job advertisements contain unstructured information, which hampers orientation and automated processing of their content. Job advertisements consist of a job position name and advertisement description. The advertisement description usually contains some of the following information. The first is job summary, and is responsibilities, which is a list describing the scope of the job position, job requirements, required skills, a list of competencies of an ideal job applicant, required qualification, required work experience, necessary knowledge, good-to-have skills, salary, benefits, and information about the employer
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