Abstract: A variety of technologies are applied in matching techniques for job candidate information. For example, a match forecaster can propose query modifications when the number of candidates meeting criteria specified in a query is outside of a desired range. Cloning techniques can find job candidate matches having characteristics similar to those of a desirable candidate. The match techniques can be used in conjunction with conceptualization techniques in which concepts such as job skills, job title, management, and the like, are extracted from a job candidate's resume. A set of concepts can be represented as a point in n-dimensional concept space. Thus, candidates and desired candidate criteria can be represented in the concept space. Those candidates closest to the desired candidate criteria in the concept space can be designated as matches for the desired candidate criteria. In addition, required criteria can be supported.