1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.giraph.examples;
20
21 import com.google.common.collect.Maps;
22
23 import java.util.Map;
24
25 public class RandomWalkTestUtils {
26
27 /** Minimum difference between doubles */
28 public static final double EPSILON = 10e-3;
29
30 /**
31 * Parse steady state probabilities.
32 * @param results The steady state probabilities in text format.
33 * @return A map representation of the steady state probabilities.
34 */
35 public static Map<Long, Double> parseSteadyStateProbabilities(
36 Iterable<String> results) {
37 Map<Long, Double> result = Maps.newHashMap();
38 for (String s : results) {
39 String[] tokens = s.split("\\t");
40 Long id = Long.parseLong(tokens[0]);
41 Double value = Double.parseDouble(tokens[1]);
42 result.put(id, value);
43 }
44 return result;
45 }
46 }