diff --git a/lib/model/bsgd.js b/lib/model/bsgd.js
index 59e033220..6ecd507cd 100644
--- a/lib/model/bsgd.js
+++ b/lib/model/bsgd.js
@@ -184,6 +184,9 @@ export default class BSGD {
 	}
 }
 
+/**
+ * Multiclass Budgeted Stochastic Gradient Descent
+ */
 export class MulticlassBSGD {
 	// Breaking the Curse of Kernelization: Budgeted Stochastic Gradient Descent for Large-Scale SVM Training
 	// https://www.jmlr.org/papers/volume13/wang12b/wang12b.pdf