Inserted LaTeX formulae in indirect_confirmation_measure

gensim/topic_coherence/indirect_confirmation_measure.py

@@ -9,11 +9,11 @@
 
 The formula used to compute indirect confirmation measure is:
                                 _              _
-m_sim(m, gamma)(W', W*) = s_sim(V_m,gamma(W'), V_m,gamma(W*))
+m_{sim}_{(m, \gamma)}(W', W*) = s_{sim}(\vec{V}^{\,}_{m,\gamma}(W'), \vec{V}^{\,}_{m,\gamma}(W*))
 
 where s_sim can be cosine, dice or jaccard similarity and
-_
-V_m,gamma(W') = {sigma(w' belonging to W') m(w_i, w_j) ^ gamma} where j = 1, ...., |W|
+
+\vec{V}^{\,}_{m,\gamma}(W') = \Bigg \{{\sum_{w_{i} \in W'}^{ } m(w_{i}, w_{j})^{\gamma}}\Bigg \}_{j = 1,...,|W|}
 
 Here 'm' is the direct confirmation measure used.
 """