Table 1: Comparison of Filtering Algorithms
           
  Algorithm
Context Superset Subset AND OR Intersection
{A} A A A A A
  B B B B B
  A, B A, B A, B A, B A, B
  A, B, C A, B, C A, B, C A, B, C A, B, C
{B} A A A A A
  B B B B B
  A, B A, B A, B A, B A, B
  A, B, C A, B, C A, B, C A, B, C A, B, C
{C} A A A A A
  B B B B B
  A, B A, B A, B A, B A, B
  A, B, C A, B, C A, B, C A, B, C A, B, C
{A, B} A A A A A
  B B B B B
  A, B A, B A, B A, B A, B
  A, B, C A, B, C A, B, C A, B, C A, B, C
{A, C} A A A A A
  B B B B B
  A, B A, B A, B A, B A, B
  A, B, C A, B, C A, B, C A, B, C A, B, C
{A, B, C} A A A A A
  B B B B B
  A, B A, B A, B A, B A, B
  A, B, C A, B, C A, B, C A, B, C A, B, C
Each cell in the body of the table contains the same four scopes at the intersection of an algorithm and a context. Scopes shown in bold are considered by the algorithm in whose column they appear to be "in scope" with respect to the context in whose row they appear.