Add alg to compare performance of porter and porter2 stemmers

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1457317 13f79535-47bb-0310-9956-ffa450edef68

lucene/benchmark/conf/english-porter-comparison.alg

@@ -0,0 +1,51 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# This alg compares the performance of the original-algorithm English porter
+# stemmer (PorterStemmer, via PorterStemFilter) to the Porter2 aka English
+# stemmer (EnglishStemmer via SnowballPorterFilter).
+
+content.source=org.apache.lucene.benchmark.byTask.feeds.ReutersContentSource
+doc.tokenized=false
+doc.body.tokenized=true
+docs.dir=reuters-out
+
+-AnalyzerFactory(name:original-porter-stemmer,StandardTokenizer,
+  StandardFilter,EnglishPossessiveFilter,LowerCaseFilter,StopFilter,
+  PorterStemFilter)
+
+-AnalyzerFactory(name:porter2-stemmer,StandardTokenizer,
+  StandardFilter,EnglishPossessiveFilter,LowerCaseFilter,StopFilter,
+  SnowballPorterFilter(language:English))
+
+-AnalyzerFactory(name:no-stemmer,StandardTokenizer,
+  StandardFilter,EnglishPossessiveFilter,LowerCaseFilter,StopFilter)
+
+{ "Rounds"
+    -NewAnalyzer(original-porter-stemmer)
+    -ResetInputs
+    { "Original Porter Stemmer" { ReadTokens > : 20000 }
+
+    -NewAnalyzer(porter2-stemmer)
+    -ResetInputs
+    { "Porter2/English Stemmer" { ReadTokens > : 20000 }
+
+    -NewAnalyzer(no-stemmer)
+    -ResetInputs
+    { "No Stemmer" { ReadTokens > : 20000 }
+
+    NewRound
+} : 5
+RepSumByName