Experimental/two stage

.github/workflows/test.yml

@@ -29,10 +29,10 @@ jobs:
         with:
           path: .venv
           key: venv-lint-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
-  
+
       - name: Install dependencies
         if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
-        run: make install 
+        run: make install
 
       - name: Static analysis
         run: make lint
@@ -62,10 +62,10 @@ jobs:
         with:
           path: .venv
           key: venv-test-${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('**/poetry.lock') }}
-  
+
       - name: Install dependencies
         if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
-        run: make install 
+        run: make install
 
       - name: Run tests
         run: make test

README.md

@@ -89,6 +89,7 @@ The default version doesn't contain all the dependencies, because some of them a
 - `torch`: adds models based on neural nets,
 - `visuals`: adds visualization tools,
 - `nmslib`: adds fast ANN recommenders.
+- `catboost`: adds Catboost as a reranker for `CandidateRankingModel`
 
 Install extension:
 ```