| // 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. |
| |
| using System; |
| using System.Collections.Generic; |
| using System.Globalization; |
| using System.Linq; |
| using Org.Apache.REEF.Tang.Annotations; |
| using Org.Apache.REEF.Utilities; |
| using Org.Apache.REEF.Wake.Remote; |
| |
| namespace Org.Apache.REEF.Examples.MachineLearning.KMeans.codecs |
| { |
| /// <summary> |
| /// TODO: use proper avro scheme to do encode/decode |
| /// </summary> |
| public class ProcessedResultsCodec : ICodec<ProcessedResults> |
| { |
| [Inject] |
| public ProcessedResultsCodec() |
| { |
| } |
| |
| public byte[] Encode(ProcessedResults results) |
| { |
| return ByteUtilities.StringToByteArrays(results.Loss + "+" + string.Join("@", results.Means.Select(m => m.ToString()))); |
| } |
| |
| public ProcessedResults Decode(byte[] data) |
| { |
| string[] parts = ByteUtilities.ByteArraysToString(data).Split('+'); |
| if (parts.Count() != 2) |
| { |
| throw new ArgumentException("cannot deserialize from" + ByteUtilities.ByteArraysToString(data)); |
| } |
| float loss = float.Parse(parts[0], CultureInfo.InvariantCulture); |
| List<PartialMean> means = parts[1].Split('@').Select(PartialMean.FromString).ToList(); |
| return new ProcessedResults(means, loss); |
| } |
| } |
| } |