Term

Definition
Concerned with the identification of groups of similiar objects under study 


Term
Typology/Classification within archaelogy and heritage? 

Definition
Practical and theorethical they can be Monothetic or Polythetic 


Term
What are the 4 points of good classification? 

Definition
objects belonging to the same tupe should be alike in some way, objects belonging to different types should be less alike than objects belonginf to the same type, types should be properly defined, able to decide which type a new object is. 


Term
What does Monothetic and Polythetic mean? 

Definition
Monothetic= share the prescence and absence of defined traits. Polythetic= Share the prescence and absence of only some defined traits. 


Term
What does the Mathematical approach (numerical taxonomy) consist of? 

Definition
Artefact types should be defined in terms of patterns of association between attributes. The measure of similiarity between the items and variables they are to be grouped. They are objective in a sense. 


Term
How is the mathematical approach useful in a predominantly subjective area? 

Definition
Helps to make the bases of our classification decisions more explicit. Seeks order in large numbers of items, making the grouping process consistent rather than objective 


Term
What are the 5 advantages of Classification? 

Definition
Some artefact shapes are complex, Relationship between types is as important as the definition of types themselves and it is difficult to define this intuitively, Helps to smooth over disagreements and agreements, Mathematical, Discovery of 'real types' through statistical techniques. 


Term
What is the similiarity coefficent and clarke matrix? 

Definition
A way of measuring the similarity between polythetic object types. 


Term
What are the 3 types of coefficent? 

Definition
Presence/Absence, Ratio, 1 to 5 scale of prescence. 


Term
What are the differences between the Clarke methods and Jaccard coefficent? 

Definition
Clarke shows both positive and negative matches, whilst jaccard only shows positive. 


Term
What are the 5 methods developed that calculate the matrix in coefficent? 

Definition
Clustering, Principal Components Analysis(PCA), Principal Coordinates Analysis(PCO), Nonmetric MultiDimensional Scaling(MDS), Correspondence Analysis (CA) 


Term
What the 2 main categories of Clustering and explain? 

Definition
Partitioning= grouped in terms of similarity. Heirarchical= a) Agglomerative all items individuals, then grouped in terms of similiarity. B)Divisive items in a single group, then divide according to some criteria. 


Term

Definition


Term
What are the 4 rules of single link clustering, producing a dendrogram from a simliarity matrix? 

Definition
Similiarity matrix is searched for the largest coefficent, The matrix is searched for the next largest coefficent, Next largest, Continues until complete. 

