Similarity v0.2.0 Similarity.Cosine View Source

A struct that can be used to accumulate ids & attributes and calcuate similarity between them.

Link to this section Summary

Functions

Puts a new id with attributes into %Cosine{}.map and returns %Cosine{} struct.

Returns Similarity.cosine_srol/2 similarity between two pairs of ids (id_a, id_b) in %Cosine{}

Returns a new %Cosine{} struct to be first used with add/3 function

Returns a stream of all unique pairs of similarities in %Cosine{}.map

Link to this section Functions

Link to this function

add(struct, id, attributes) View Source

Puts a new id with attributes into %Cosine{}.map and returns %Cosine{} struct.

Example:

s = Similarity.Cosine.new
s = s |> Similarity.Cosine.add("barna", [{"n_of_bacons", 3}, {"hair_color_r", 124}, {"hair_color_g", 188}, {"hair_color_b", 11}])
Link to this function

between(cosine, id_a, id_b) View Source

Returns Similarity.cosine_srol/2 similarity between two pairs of ids (id_a, id_b) in %Cosine{}

Example:

s = Similarity.Cosine.new
s = s |> Similarity.Cosine.add("barna", [{"n_of_bacons", 3}, {"hair_color_r", 124}, {"hair_color_g", 188}, {"hair_color_b", 11}])
s = s |> Similarity.Cosine.add("somebody", [{"n_of_bacons", 0}, {"hair_color_r", 222}, {"hair_color_g", 62}, {"hair_color_b", 11}])
s |> Similarity.Cosine.between("barna", "somebody")

Returns a new %Cosine{} struct to be first used with add/3 function

Returns a stream of all unique pairs of similarities in %Cosine{}.map

Example:

s = Similarity.Cosine.new
s = s |> Similarity.Cosine.add("barna", [{"n_of_bacons", 3}, {"hair_color_r", 124}, {"hair_color_g", 188}, {"hair_color_b", 11}])
s = s |> Similarity.Cosine.add("somebody", [{"n_of_bacons", 0}, {"hair_color_r", 222}, {"hair_color_g", 62}, {"hair_color_b", 11}])
Similarity.Cosine.stream(s)