השוואת שיטות

	Frequency Seriation	Harris Matrix
תחום	ארכאולוגיה	ארכאולוגיה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1962	1973
הוגה השיטה	Leslie Spier; James A. Ford (developed from W. M. F. Petrie's sequence dating)	Edward C. Harris (with the Winchester excavation team)
סוג	Relative-chronology ordering of assemblages by type proportions	Stratigraphic recording and sequence-diagramming pipeline
מקור מכונן	Lyman, R. L., & O'Brien, M. J. (2006). Measuring Time with Artifacts: A History of Methods in American Archaeology. University of Nebraska Press. ISBN: 9780803280526	Harris, E. C. (1989). Principles of Archaeological Stratigraphy (2nd ed.). Academic Press. ISBN: 9780123266514
כינויים	Frequency Seriation Dating, Battleship-Curve Seriation, Proportional Seriation	Stratigraphic Sequence Diagram, Harris-Winchester Matrix, Single-Context Recording, Context Sequence Diagram
קשורות	3	2
תקציר	Frequency seriation is a relative-dating technique that orders archaeological assemblages in time by the changing proportions of the artifact types they contain. Its premise is that any cultural type is introduced, gradually becomes popular, peaks, and then declines, so that the relative frequency of a type traces a single rise-and-fall curve through time. By rearranging the rows of a type-by-assemblage abundance table until every type's frequency forms one continuous unimodal sequence, the analyst recovers an ordering interpreted as chronological. Drawn as horizontal bars, these curves take the lens or 'battleship' shape that gives the method its popular name. Frequency seriation grew out of W. M. F. Petrie's sequence dating and was formalized for proportional data by mid-twentieth-century Americanists such as James A. Ford, becoming a backbone of culture-historical chronology before absolute dating was widely available.	The Harris matrix is a method for recording and diagramming the stratigraphic sequence of an archaeological site as a partial-order diagram of individually defined contexts. Devised by Edward C. Harris at the Winchester excavations in 1973 and codified in his Principles of Archaeological Stratigraphy, it treats every deposit, cut, and interface as a separate stratigraphic unit and reduces the tangle of physical relationships among them to a minimal directed acyclic graph that expresses only relative temporal order. By distinguishing physical superposition from temporal sequence and stripping away redundant relationships through transitive reduction, the matrix turns the three-dimensional complexity of a dig into a single, auditable diagram. It is the structural backbone of single-context recording and the standard interface between excavation and chronological modeling.