From c225959f285316d3bac4a89dffe465db2ab75ae3 Mon Sep 17 00:00:00 2001
From: JerryYanWan <ywanad@connect.ust.hk>
Date: Tue, 18 Apr 2017 16:58:59 +0800
Subject: [PATCH] revise Parallel to serial in spec

gradient check for DiceCoefficient