Show fewer kmer labels in nn performance plot

tools/plot_nn_performance.py

@@ -34,7 +34,9 @@ def main():
     # precision recall
     sns.scatterplot(x='recall', y='precision', data=performance_df, ax=ax_pr)
     for km, tup in performance_df.iterrows():
-        ax_pr.text(x=tup.recall, y=tup.precision, s=km, fontsize=5)
+        # Only add text to k-mers in 'middle region'
+        if 0.2 < tup.recall < 0.7 or 0.2 < tup.precision < 0.75:
+            ax_pr.text(x=tup.recall, y=tup.precision, s=km, fontsize=5)
 
     # accuracy
     sns.violinplot(y='accuracy', data=performance_df, color="0.8", ax=ax_acc)