Java example source code file (ApiTest.java)

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Java - Java tags/keywords

apitest, barneshuttsne, baseuiservertest, classpathresource, exception, fileinputstream, ignore, indarray, list, objectmapper, string, test, urlresource, util

The ApiTest.java Java example source code

package org.deeplearning4j.ui;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.io.IOUtils;
import org.canova.api.util.ClassPathResource;
import org.deeplearning4j.plot.BarnesHutTsne;
import org.deeplearning4j.ui.api.UrlResource;
import org.junit.Ignore;
import org.junit.Test;
import org.nd4j.linalg.api.buffer.DataBuffer;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;
import org.nd4j.linalg.indexing.NDArrayIndex;


import javax.ws.rs.client.Entity;
import javax.ws.rs.core.MediaType;
import java.io.File;
import java.io.FileInputStream;
import java.util.List;

import static org.junit.Assert.*;

/**
 * @author Adam Gibson
 */
public class ApiTest extends BaseUiServerTest {
    @Test
    @Ignore
    public void testUpdateCoords() throws Exception {
        Nd4j.ENFORCE_NUMERICAL_STABILITY = true;
        Nd4j.factory().setDType(DataBuffer.Type.DOUBLE);
        Nd4j.getRandom().setSeed(123);
        BarnesHutTsne b = new BarnesHutTsne.Builder().stopLyingIteration(250)
                .theta(0.5).learningRate(500).useAdaGrad(false)
                .build();

        ClassPathResource resource = new ClassPathResource("/mnist2500_X.txt");
        File f = resource.getFile();
        INDArray data = Nd4j.readNumpy(f.getAbsolutePath(),"   ").get(NDArrayIndex.interval(0, 100),NDArrayIndex.interval(0,784));



        ClassPathResource labels = new ClassPathResource("mnist2500_labels.txt");
        List<String> labelsList = IOUtils.readLines(labels.getInputStream()).subList(0, 100);
        b.plot(data, 2, labelsList, "coords.csv");
        String coords =  client.target("http://localhost:8080").path("api").path("update")
                .request().accept(MediaType.APPLICATION_JSON)
                .post(Entity.entity(new UrlResource("http://localhost:8080/api/coords.csv"), MediaType.APPLICATION_JSON))
                .readEntity(String.class);
        ObjectMapper mapper = new ObjectMapper();
        List<String> testLines = mapper.readValue(coords,List.class);
        List<String> lines = IOUtils.readLines(new FileInputStream("coords.csv"));
        assertEquals(testLines,lines);
    }

}