Add rankers to factory

include/meta/index/ranker/dirichlet_prior.h

@@ -384,6 +384,27 @@ class dirichlet_mackay_peto: public dirichlet_prior_opt{
  */
 template <>
 std::unique_ptr<ranker> make_ranker<dirichlet_prior>(const cpptoml::table&);
+
+/**
+ * Specialization of the factory method used to create dirichlet_digamma_rec
+ * rankers.
+ */
+template <>
+std::unique_ptr<ranker> make_ranker<dirichlet_digamma_rec>(const cpptoml::table&);
+
+/**
+ * Specialization of the factory method used to create dirichlet_log_approx
+ * rankers.
+ */
+template <>
+std::unique_ptr<ranker> make_ranker<dirichlet_log_approx>(const cpptoml::table&);
+
+/**
+ * Specialization of the factory method used to create dirichlet_mackay_peto
+ * rankers.
+ */
+template <>
+std::unique_ptr<ranker> make_ranker<dirichlet_mackay_peto>(const cpptoml::table&);
 }
 }
 #endif

src/index/ranker/ranker_factory.cpp

@@ -31,6 +31,9 @@ ranker_factory::ranker_factory()
     reg<pivoted_length>();
     reg<kl_divergence_prf>();
     reg<rocchio>();
+    reg<dirichlet_digamma_rec>();
+    reg<dirichlet_log_approx>();
+    reg<dirichlet_mackay_peto>();
 }
 
 std::unique_ptr<ranker> make_ranker(const cpptoml::table& config)