Author: robinanil
Date: Fri Jan 8 08:23:22 2010
New Revision: 897134
URL: http://svn.apache.org/viewvc?rev=897134&view=rev
Log:
MAHOUT-221 Missed out two files while checking in FP-Bonsai
Added:
lucene/mahout/trunk/core/src/test/java/org/apache/mahout/fpm/pfpgrowth/fpgrowth/
lucene/mahout/trunk/core/src/test/java/org/apache/mahout/fpm/pfpgrowth/fpgrowth/FrequentPatternMaxHeapTest.java
lucene/mahout/trunk/examples/src/main/java/org/apache/mahout/fpm/pfpgrowth/example/dataset/KeyBasedStringTupleReducer.java
Added:
lucene/mahout/trunk/core/src/test/java/org/apache/mahout/fpm/pfpgrowth/fpgrowth/FrequentPatternMaxHeapTest.java
URL:
http://svn.apache.org/viewvc/lucene/mahout/trunk/core/src/test/java/org/apache/mahout/fpm/pfpgrowth/fpgrowth/FrequentPatternMaxHeapTest.java?rev=897134&view=auto
==============================================================================
---
lucene/mahout/trunk/core/src/test/java/org/apache/mahout/fpm/pfpgrowth/fpgrowth/FrequentPatternMaxHeapTest.java
(added)
+++
lucene/mahout/trunk/core/src/test/java/org/apache/mahout/fpm/pfpgrowth/fpgrowth/FrequentPatternMaxHeapTest.java
Fri Jan 8 08:23:22 2010
@@ -0,0 +1,61 @@
+/**
+ * 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.
+ */
+
+package org.apache.mahout.fpm.pfpgrowth.fpgrowth;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Random;
+import java.util.Set;
+
+import junit.framework.TestCase;
+
+public class FrequentPatternMaxHeapTest extends TestCase {
+
+ public void testMapHeap() {
+ Random gen = new Random(123L);
+
+ FrequentPatternMaxHeap pq = new FrequentPatternMaxHeap(50, true);
+ for (int i = 0; i < 20; i++) {
+ FrequentPatternMaxHeap rs = new FrequentPatternMaxHeap(50, false);
+ for (int j = 0; j < 1000; j++) {
+ Pattern p = generateRandomPattern(gen);
+ rs.insert(p);
+ }
+ for (Pattern p : rs.getHeap()) {
+ pq.insert(p);
+ }
+ }
+ }
+
+ public Pattern generateRandomPattern(Random gen) {
+ int length = 1 + Math.abs(gen.nextInt() % 6);
+ Pattern p = new Pattern();
+ Set<Integer> set = new HashSet<Integer>();
+ for (int i = 0; i < length; i++) {
+ int id = Math.abs(gen.nextInt() % 20);
+ while (set.contains(id)) {
+ id = Math.abs(gen.nextInt() % 20);
+ }
+ set.add(id);
+ int s = 5 + gen.nextInt() % 4;
+ p.add(id, s);
+ }
+ Arrays.sort(p.getPattern());
+ return p;
+ }
+}
Added:
lucene/mahout/trunk/examples/src/main/java/org/apache/mahout/fpm/pfpgrowth/example/dataset/KeyBasedStringTupleReducer.java
URL:
http://svn.apache.org/viewvc/lucene/mahout/trunk/examples/src/main/java/org/apache/mahout/fpm/pfpgrowth/example/dataset/KeyBasedStringTupleReducer.java?rev=897134&view=auto
==============================================================================
---
lucene/mahout/trunk/examples/src/main/java/org/apache/mahout/fpm/pfpgrowth/example/dataset/KeyBasedStringTupleReducer.java
(added)
+++
lucene/mahout/trunk/examples/src/main/java/org/apache/mahout/fpm/pfpgrowth/example/dataset/KeyBasedStringTupleReducer.java
Fri Jan 8 08:23:22 2010
@@ -0,0 +1,72 @@
+/**
+ * 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.
+ */
+
+package org.apache.mahout.fpm.pfpgrowth.example.dataset;
+
+import java.io.IOException;
+import java.util.HashSet;
+import java.util.Set;
+
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.mapreduce.Reducer;
+import org.apache.mahout.common.Parameters;
+import org.apache.mahout.common.StringTuple;
+
+public class KeyBasedStringTupleReducer extends Reducer<Text, StringTuple,
Text, Text> {
+
+ private int maxTransactionLength = 100;
+
+ protected void reduce(Text key, Iterable<StringTuple> values, Context
context) throws IOException,
+ InterruptedException {
+ Set<String> items = new HashSet<String>();
+
+ for (StringTuple value : values) {
+ for (String field : value.getEntries()) {
+ items.add(field);
+ }
+ }
+ if (items.size() > 1) {
+ int i = 0;
+ StringBuilder sb = new StringBuilder();
+ String sep = "";
+ for (String field : items) {
+ if (i % maxTransactionLength == 0) {
+ if (i != 0) {
+ context.write(null, new Text(sb.toString()));
+ }
+ sb.replace(0, sb.length(), "");
+ sep = "";
+ }
+
+ sb.append(sep).append(field);
+ sep = "\t";
+
+ i++;
+
+ }
+ if (sb.length() > 0) {
+ context.write(null, new Text(sb.toString()));
+ }
+ }
+ };
+
+ protected void setup(Context context) throws IOException,
InterruptedException {
+ super.setup(context);
+ Parameters params =
Parameters.fromString(context.getConfiguration().get("job.parameters", ""));
+ maxTransactionLength = Integer.valueOf(params.get("maxTransactionLength",
"100"));
+ }
+}
