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[[File:A sample Design Structure Matrix (DSM).gif|273x193px|framed|right|A sample DSM with 7 elements and 11 dependency marks.]]
The '''Design Structure Matrix (DSM)''' (also referred to as '''dependency structure matrix''', '''dependency structure method''', '''dependency source matrix''', '''problem solving matrix (PSM)''', '''incidence matrix''', '''''N<sup>2</sup>'' matrix''', '''interaction matrix''', '''dependency map''' or '''design precedence matrix''') is a simple, compact and visual representation of a system or project in the form of a [[matrix (mathematics)|matrix]].
Reading across a row reveals what other elements the element in that row provides outputs to, and scanning a column reveals what other elements the element in that column receives inputs from. It is the equivalent of an [[adjacency matrix]] in [[graph theory]], and is used in [[systems engineering]] and [[project management]] to model the structure of complex systems or processes, in order to perform system analysis, project planning and organization design. [[Don Steward]] coined the term "design structure matrix" in 1981, even though the method has been in use since the 1960s. == Overview ==
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