The document discusses employee selection and the process of comparing job candidates' qualifications to the requirements of an open position. The goal is to maintain or increase organizational efficiency by selecting the most suitable candidates. Selection involves comparing employee characteristics to the job model or standard. There are three main models: model fitting for a single candidate, model selection for multiple candidates and one vacancy, and model classification for multiple candidates and vacancies. Effective selection tools like applications and weighted applications can help predict an applicant's potential workplace success by collecting verifiable background data and determining links to job performance.