diff --git a/angular-underscore.js b/angular-underscore.js
index 55c9f41..20d44cc 100644
--- a/angular-underscore.js
+++ b/angular-underscore.js
@@ -55,6 +55,14 @@
     };
   }]);
 
+  // simplify custome overriding on angular side
+  var
+    adapFunc = {
+      'groupBy': _.memoize(function (collection, param) {
+        return _.groupBy(collection, param);
+      })
+    };
+
   // end custom _
 
 
@@ -73,8 +81,7 @@
   });
 
   // end register angular-underscore/utils
-
-
+        
   // begin register angular-underscore/filters
 
   var
@@ -138,7 +145,7 @@
     }
 
     var
-      filter = _.bind(_[filterNames[0]], _),
+      filter = _.bind(adapFunc[filterNames[0]] ? adapFunc[filterNames[0]] : _[filterNames[0]], _),
       filterFactory = function() {return filter;};
 
     _.each(filterNames, function(filterName) {
@@ -153,5 +160,6 @@
   });
 
   // end register angular-underscore/filters
+      
 
 }(angular, _));
diff --git a/angular-underscore.min.js b/angular-underscore.min.js
index 5a087b1..530017d 100644
--- a/angular-underscore.min.js
+++ b/angular-underscore.min.js
@@ -1 +1 @@
-(function(ng,_){"use strict";var underscoreModule=ng.module("angular-underscore",[]),utilsModule=ng.module("angular-underscore/utils",[]),filtersModule=ng.module("angular-underscore/filters",[]);function propGetterFactory(prop){return function(obj){return obj[prop]}}_._=_;_.each(["min","max","sortedIndex"],function(fnName){_[fnName]=_.wrap(_[fnName],function(fn){var args=_.toArray(arguments).slice(1);if(_.isString(args[2])){args[2]=propGetterFactory(args[2])}else if(_.isString(args[1])){args[1]=propGetterFactory(args[1])}return fn.apply(_,args)})});ng.injector(["ng"]).invoke(["$filter",function($filter){_.filter=_.select=_.wrap($filter("filter"),function(filter,obj,exp){if(!_.isArray(obj)){obj=_.toArray(obj)}return filter(obj,exp)});_.reject=function(obj,exp){if(_.isString(exp)){return _.filter(obj,"!"+exp)}var diff=_.bind(_.difference,_,obj);return diff(_.filter(obj,exp))}}]);_.each(_.methods(_),function(methodName){function register($rootScope){$rootScope[methodName]=_.bind(_[methodName],_)}_.each([underscoreModule,utilsModule,ng.module("angular-underscore/utils/"+methodName,[])],function(module){module.run(["$rootScope",register])})});var adapList=[["map","collect"],["reduce","inject","foldl"],["reduceRight","foldr"],["find","detect"],["filter","select"],"where","findWhere","reject","invoke","pluck","max","min","sortBy","groupBy","countBy","shuffle","toArray","size",["first","head","take"],"initial","last",["rest","tail","drop"],"compact","flatten","without","union","intersection","difference",["uniq","unique"],"zip","object","indexOf","lastIndexOf","sortedIndex","keys","values","pairs","invert",["functions","methods"],"pick","omit","tap","identity","uniqueId","escape","result","template"];_.each(adapList,function(filterNames){if(!_.isArray(filterNames)){filterNames=[filterNames]}var filter=_.bind(_[filterNames[0]],_),filterFactory=function(){return filter};_.each(filterNames,function(filterName){_.each([underscoreModule,filtersModule,ng.module("angular-underscore/filters/"+filterName,[])],function(module){module.filter(filterName,filterFactory)})})})})(angular,_);
\ No newline at end of file
+(function(n,t){"use strict";function u(n){return function(t){return t[n]}}var r=n.module("angular-underscore",[]),e=n.module("angular-underscore/utils",[]),o=n.module("angular-underscore/filters",[]),i,f;t._=t;t.each(["min","max","sortedIndex"],function(n){t[n]=t.wrap(t[n],function(n){var i=t.toArray(arguments).slice(1);return t.isString(i[2])?i[2]=u(i[2]):t.isString(i[1])&&(i[1]=u(i[1])),n.apply(t,i)})});n.injector(["ng"]).invoke(["$filter",function(n){t.filter=t.select=t.wrap(n("filter"),function(n,i,r,u){return t.isArray(i)||(i=t.toArray(i)),n(i,r,u)});t.reject=function(n,i){if(t.isString(i))return t.filter(n,"!"+i);var r=t.bind(t.difference,t,n);return r(t.filter(n,i))}}]);i={groupBy:t.memoize(function(n,i){return t.groupBy(n,i)})};t.each(t.methods(t),function(i){function u(n){n[i]=t.bind(t[i],t)}t.each([r,e,n.module("angular-underscore/utils/"+i,[])],function(n){n.run(["$rootScope",u])})});f=[["map","collect"],["reduce","inject","foldl"],["reduceRight","foldr"],["find","detect"],["filter","select"],"where","findWhere","reject","invoke","pluck","max","min","sortBy","groupBy","indexBy","countBy","shuffle","sample","toArray","size",["first","head","take"],"initial","last",["rest","tail","drop"],"compact","flatten","without","partition","union","intersection","difference",["uniq","unique"],"zip","object","indexOf","lastIndexOf","sortedIndex","keys","values","pairs","invert",["functions","methods"],"pick","omit","tap","identity","uniqueId","escape","unescape","result","template"];t.each(f,function(u){t.isArray(u)||(u=[u]);var f=t.bind(i[u[0]]?i[u[0]]:t[u[0]],t),e=function(){return f};t.each(u,function(i){t.each([r,o,n.module("angular-underscore/filters/"+i,[])],function(n){n.filter(i,e)})})})})(angular,_);
\ No newline at end of file
diff --git a/angular-underscore.min.js.map b/angular-underscore.min.js.map
new file mode 100644
index 0000000..c6e4f5e
--- /dev/null
+++ b/angular-underscore.min.js.map
@@ -0,0 +1,8 @@
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+"sources":["angular-underscore.js"],
+"names":["ng","_","propGetterFactory","prop","obj","underscoreModule","module","utilsModule","filtersModule","adapFunc","adapList","each","fnName","wrap","fn","args","toArray","arguments","slice","isString","apply","injector","invoke","$filter","filter","select","exp","comparator","isArray","reject","_.reject","diff","bind","difference","memoize","collection","param","groupBy","methods","methodName","register","$rootScope","run","filterNames","filterFactory","filterName","angular"]
+}