1. A method of discovering work-item relations, comprising: analyzing, automatically by a processor, a description of a collection of work-items created in one or more projects, to generate a plurality of work-item elements and their relationships; analyzing, automatically by the processor, one or more standardized specifications describing practice guidelines to follow in executing said one or more projects and deliverables expected to be generated, to generate a plurality of standardized specification elements and their relationships represented as nodes and edges, the one or more standardized specifications specified in a text form and comprising a title of a task involved in the one or more projects, a relationship the task in the one or more projects has with another task in the one or more projects, description of the task, the one or more standardized specification further comprising a work-breakdown tree with different tasks comprising at least the task; mapping, automatically by the processor, said plurality of work-item elements to said plurality of standardized specification elements, the mapping comprising identifying a threshold similarity between a single work-item element node and a standardized specification element, and between a pair of work-item element nodes with associated link relationship and a pair of standardized specification elements with associated link relationship, wherein the single work-item element node is mapped at most to one standardized specification element, the identifying the threshold similarity comprising one or more of string similarity, Boolean similarity and relational similarity; discovering, automatically by the processor, at least one or more missing relations among said plurality of work-item elements based on said mapping, wherein the relationships comprise at least one or more of changed by, has same owner as, input from and output to; receiving, based on at least on one of a determination that the mapping creates a conflict and the mapping has a low confidence, input from a user to resolve the at least one of the conflict in the mapping and the low confidence in the mapping; and adding, automatically by the processor, the discovered one or more missing relations as edges to the mapping.