What is intersection of union?

Intersection over Union is an evaluation metric used to measure the accuracy of an object detector on a particular dataset. We often see this evaluation metric used in object detection challenges such as the popular PASCAL VOC challenge.

What is the formula of union and intersection?

= n(A) + n(B) – n(A ∩ B) Simply, the number of elements in the union of set A and B is equal to the sum of cardinal numbers of the sets A and B, minus that of their intersection.

Is a ∩ B the same as B ∩ A?

A ∩ B is a subset of A and B. Intersection of a set is commutative, i.e., A ∩ B = B ∩ A.

What is the difference between ∪ and ∩?

Symbolic Representation – The union of two sets is represented by the symbol “∪”, whereas the intersection of two sets is represented by the symbol “∩”. Logical Relevance – The union of two sets corresponds to the logical “OR” whereas the intersection of two sets correspond to the logical “AND”.

What is intersection example?

The intersection of sets is a subset of each set forming the intersection, (A ∩ B) ⊂ A and (A ∩ B) ⊂ B. For example- A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} , B = {2, 4, 7, 12, 14} , A ∩ B = {2, 4, 7}.

What does ∩ mean in probability?

intersection
P(A∩B) is the probability of both independent events “A” and “B” happening together. The symbol “∩” means intersection. This formula is used to quickly predict the result.

What’s the difference between intersection and union?

The union of two sets contains all the elements contained in either set (or both sets). The union is notated A ⋃ B. The intersection of two sets contains only the elements that are in both sets.

What is union and intersection examples?

Difference between Union and Intersection of Set

Union of Set Intersection of Set
Example: If X = { 1,2,3} and Y = { 2, 3, 4}, then X ∪ Y = { 1,2,3,4} Example: If X = { 1,2,3} and Y = { 2, 3, 4}, then X ∩ Y = { 2,3}

What do you mean by union?

Definition of union (Entry 1 of 2) 1a : an act or instance of uniting or joining two or more things into one: such as. (1) : the formation of a single political unit from two or more separate and independent units. (2) : a uniting in marriage also : sexual intercourse.