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Java example source code file (Word2VecVariables.java)

This example Java source code file (Word2VecVariables.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

adagrad, deprecated, double, exception, name_space, object, only, seed, string, suppresswarnings, token_preprocessor, util, vector_length, word2vecvariables

The Word2VecVariables.java Java example source code

package org.deeplearning4j.spark.models.embeddings.word2vec;

import org.apache.spark.SparkConf;

import java.util.HashMap;
import java.util.Map;

/**
 * @author jeffreytang
 */
@Deprecated
public class Word2VecVariables {

    public final static String NAME_SPACE = "org.deeplearning4j.scaleout.perform.models.word2vec";
    public final static String VECTOR_LENGTH = NAME_SPACE + ".length";
    public final static String ADAGRAD = NAME_SPACE + ".adagrad";
    public final static String NEGATIVE = NAME_SPACE + ".negative";
    public final static String NUM_WORDS = NAME_SPACE + ".numwords";
    public final static String TABLE = NAME_SPACE + ".table";
    public final static String WINDOW = NAME_SPACE + ".window";
    public final static String ALPHA = NAME_SPACE + ".alpha";
    public final static String MIN_ALPHA = NAME_SPACE + ".minalpha";
    public final static String ITERATIONS = NAME_SPACE + ".iterations";
    public final static String N_GRAMS = NAME_SPACE + ".ngrams";
    public final static String TOKENIZER = NAME_SPACE + ".tokenizer";
    public final static String TOKEN_PREPROCESSOR = NAME_SPACE + ".preprocessor";
    public final static String REMOVE_STOPWORDS = NAME_SPACE + ".removestopwords";
    public final static String SEED = NAME_SPACE + ".SEED";

    public final static Map<String, Object> defaultVals = new HashMap() {{
        put(VECTOR_LENGTH, 100);
        put(ADAGRAD, false);
        put(NEGATIVE, 5);
        put(NUM_WORDS, 1);
        // TABLE would be a string of byte of the ndarray used for -ve sampling
        put(WINDOW, 5);
        put(ALPHA, 0.025);
        put(MIN_ALPHA, 1e-2);
        put(ITERATIONS, 1);
        put(N_GRAMS, 1);
        put(TOKENIZER, "org.deeplearning4j.text.tokenization.tokenizerfactory.DefaultTokenizerFactory");
        put(TOKEN_PREPROCESSOR, "org.deeplearning4j.text.tokenization.tokenizer.preprocessor.CommonPreprocessor");
        put(REMOVE_STOPWORDS, false);
        put(SEED, 42L);
    }};

    @SuppressWarnings("unchecked")
    public static <T> T getDefault(String variableName) {
        return (T) defaultVals.get(variableName);
    }

    @SuppressWarnings("unchecked")
    public static <T> T assignVar(String variableName, SparkConf conf, Class clazz) throws Exception{
        Object ret;
        if (clazz.equals(Integer.class)) {
            ret = conf.getInt(variableName, (Integer) getDefault(variableName));

        } else if (clazz.equals(Double.class)) {
            ret = conf.getDouble(variableName, (Double) getDefault(variableName));

        } else if (clazz.equals(Boolean.class)) {
            ret = conf.getBoolean(variableName, (Boolean) getDefault(variableName));

        } else if (clazz.equals(String.class)) {
            ret = conf.get(variableName, (String) getDefault(variableName));

        } else if (clazz.equals(Long.class)) {
            ret = conf.getLong(variableName, (Long) getDefault(variableName));
        } else {
            throw new Exception("Variable Type not supported. Only boolean, int, double and String supported.");
        }
        return (T) ret;
    }
}

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