/*
* 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.ignite.examples.ml.math.matrix;
import org.apache.ignite.Ignite;
import org.apache.ignite.Ignition;
import org.apache.ignite.ml.math.Matrix;
import org.apache.ignite.ml.math.StorageConstants;
import org.apache.ignite.ml.math.impls.matrix.CacheMatrix;
import org.apache.ignite.ml.math.impls.matrix.SparseDistributedMatrix;
import org.apache.ignite.thread.IgniteThread;
/**
* This example shows how to create and use {@link SparseDistributedMatrix} API.
*
* Unlike the {@link CacheMatrix} the {@link SparseDistributedMatrix} creates it's own cache.
*/
public class SparseDistributedMatrixExample {
/**
* Executes example.
*
* @param args Command line arguments, none required.
*/
public static void main(String[] args) throws InterruptedException {
System.out.println();
System.out.println(">>> Sparse distributed matrix API usage example started.");
// Start ignite grid.
try (Ignite ignite = Ignition.start("examples/config/example-ignite.xml")) {
System.out.println(">>> Ignite grid started.");
// Create IgniteThread, we must work with SparseDistributedMatrix inside IgniteThread
// because we create ignite cache internally.
IgniteThread igniteThread = new IgniteThread(ignite.configuration().getIgniteInstanceName(), SparseDistributedMatrixExample.class.getSimpleName(), () -> {
double[][] testValues = {{1.0, 0.0, 0.0}, {0.0, 1.0, 0.0}, {0.0, 0.0, 1.0}};
System.out.println(">>> Create new SparseDistributedMatrix inside IgniteThread.");
// Create SparseDistributedMatrix, new cache will be created automagically.
SparseDistributedMatrix distributedMatrix = new SparseDistributedMatrix(testValues.length, testValues[0].length,
StorageConstants.ROW_STORAGE_MODE, StorageConstants.RANDOM_ACCESS_MODE);
distributedMatrix.assign(testValues);
System.out.println("Sum of all matrix elements is " + distributedMatrix.sum());
System.out.println(">>> Destroy SparseDistributedMatrix after using.");
// Destroy internal cache.
distributedMatrix.destroy();
});
igniteThread.start();
igniteThread.join();
}
}
}