add the tags trait

Author: ablaom

Project.toml

@@ -7,12 +7,14 @@ version = "3.4.0"
 ScientificTypesBase = "30f210dd-8aff-4c5f-94ba-8e64358c1161"
 
 [compat]
+REPL = "1.11.0"
 ScientificTypesBase = "1, 2, 3"
 julia = "^1"
 
 [extras]
+REPL = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test", "SparseArrays"]
+test = ["Test", "REPL", "SparseArrays"]

src/StatisticalTraits.jl

@@ -27,6 +27,7 @@ const TRAITS = [
     :docstring,
     :name,
     :human_name,
+    :tags,
     :is_supervised,
     :prediction_type,
     :abstract_type, #
@@ -178,6 +179,7 @@ docstring(M::Type)      = string(M) # some `String`
 docstring(Constructor::Function) = Base.Docs.doc(Constructor) |> string
 is_supervised(::Type)   = false     # or `true`
 human_name(M::Type)     = snakecase(name(M), delim=' ') # `name` defined below
+tags(::Type)            = String[]
 orientation(::Type)     = :loss  # or `:score`, `:other`
 aggregation(::Type)     = Mean()
 is_feature_dependent(::Type)     = false

test/runtests.jl

@@ -2,6 +2,7 @@ using Test
 using StatisticalTraits
 using ScientificTypesBase
 import SparseArrays
+using REPL
 
 module Fruit