T-shaped grouping: Expert finding models to agile software teams retrieval.

•Introduction of agile team formation as an optimization problem.•Proposing expert finding models to retrieve candidates for agile teams.•Introduction of coverage, communication and optimality as quality measures of teams.•Proposing retrieval models to rank generalizing specialist (i.e. T-shaped) members.•Evaluation of proposed models on real datasets gathered from StackOverflow.