From 790c2569c6e488e763c9f86dcce5cc7b3f1d048a Mon Sep 17 00:00:00 2001
From: JerryYanWan <ywanad@connect.ust.hk>
Date: Tue, 18 Apr 2017 14:55:43 +0800
Subject: [PATCH] support DiceCoefficient