Example usage for org.apache.hadoop.io DoubleWritable get

Introduction

In this page you can find the example usage for org.apache.hadoop.io DoubleWritable get.

Prototype

public double get()

Source Link

Usage

From source file:org.apache.giraph.aggregators.DoubleAverageAggregator.java

License:Apache License

@Override
public void aggregate(DoubleWritable value) {
    sum += value.get();
    count++;
}

From source file:org.apache.giraph.aggregators.DoubleMaxAggregator.java

License:Apache License

@Override
public void aggregate(DoubleWritable value) {
    getAggregatedValue().set(Math.max(getAggregatedValue().get(), value.get()));
}

From source file:org.apache.giraph.aggregators.DoubleMinAggregator.java

License:Apache License

@Override
public void aggregate(DoubleWritable value) {
    getAggregatedValue().set(Math.min(getAggregatedValue().get(), value.get()));
}

From source file:org.apache.giraph.aggregators.DoubleOverwriteAggregator.java

License:Apache License

@Override
public void aggregate(DoubleWritable value) {
    getAggregatedValue().set(value.get());
}

From source file:org.apache.giraph.aggregators.DoubleProductAggregator.java

License:Apache License

@Override
public void aggregate(DoubleWritable value) {
    getAggregatedValue().set(getAggregatedValue().get() * value.get());
}

From source file:org.apache.giraph.aggregators.DoubleSumAggregator.java

License:Apache License

@Override
public void aggregate(DoubleWritable value) {
    getAggregatedValue().set(getAggregatedValue().get() + value.get());
}

From source file:org.apache.giraph.benchmark.ShortestPathsComputation.java

License:Apache License

@Override
public void compute(Vertex<LongWritable, DoubleWritable, DoubleWritable> vertex,
        Iterable<DoubleWritable> messages) throws IOException {
    if (getSuperstep() == 0) {
        vertex.setValue(new DoubleWritable(Double.MAX_VALUE));
    }//w ww  .j a  v a2s. co m

    double minDist = isSource(vertex) ? 0d : Double.MAX_VALUE;
    for (DoubleWritable message : messages) {
        minDist = Math.min(minDist, message.get());
    }

    if (minDist < vertex.getValue().get()) {
        vertex.setValue(new DoubleWritable(minDist));
        for (Edge<LongWritable, DoubleWritable> edge : vertex.getEdges()) {
            double distance = minDist + edge.getValue().get();
            sendMessage(edge.getTargetVertexId(), new DoubleWritable(distance));
        }
    }

    vertex.voteToHalt();
}

From source file:org.apache.giraph.benchmark.ShortestPathsVertex.java

License:Apache License

@Override
public void compute(Iterable<DoubleWritable> messages) throws IOException {
    if (getSuperstep() == 0) {
        setValue(new DoubleWritable(Double.MAX_VALUE));
    }/*from  w  ww  . ja  va  2  s.c  o  m*/

    double minDist = isSource() ? 0d : Double.MAX_VALUE;
    for (DoubleWritable message : messages) {
        minDist = Math.min(minDist, message.get());
    }

    if (minDist < getValue().get()) {
        setValue(new DoubleWritable(minDist));
        for (Edge<LongWritable, DoubleWritable> edge : getEdges()) {
            double distance = minDist + edge.getValue().get();
            sendMessage(edge.getTargetVertexId(), new DoubleWritable(distance));
        }
    }

    voteToHalt();
}

From source file:org.apache.giraph.benchmark.WeightedPageRankComputation.java

License:Apache License

@Override
public void compute(Vertex<LongWritable, DoubleWritable, DoubleWritable> vertex,
        Iterable<DoubleWritable> messages) throws IOException {
    if (getSuperstep() == 0) {
        // Normalize out edge weights
        double outEdgeSum = 0;
        for (Edge<LongWritable, DoubleWritable> edge : vertex.getEdges()) {
            outEdgeSum += edge.getValue().get();
        }//from  w w  w  . j a va2s .  c o m
        for (MutableEdge<LongWritable, DoubleWritable> edge : vertex.getMutableEdges()) {
            edge.setValue(new DoubleWritable(edge.getValue().get() / outEdgeSum));
        }
    } else {
        double messageSum = 0;
        for (DoubleWritable message : messages) {
            messageSum += message.get();
        }
        vertex.getValue().set((0.15f / getTotalNumVertices()) + 0.85f * messageSum);
    }

    if (getSuperstep() < getConf().getInt(SUPERSTEP_COUNT, 0)) {
        for (Edge<LongWritable, DoubleWritable> edge : vertex.getEdges()) {
            sendMessage(edge.getTargetVertexId(),
                    new DoubleWritable(vertex.getValue().get() * edge.getValue().get()));
        }
    } else {
        vertex.voteToHalt();
    }
}

From source file:org.apache.giraph.benchmark.WeightedPageRankVertex.java

License:Apache License

@Override
public void compute(Iterable<DoubleWritable> messages) throws IOException {
    if (getSuperstep() == 0) {
        // Normalize out edge weights
        double outEdgeSum = 0;
        for (Edge<LongWritable, DoubleWritable> edge : getEdges()) {
            outEdgeSum += edge.getValue().get();
        }//from w  w w . j a  v  a2s . c  o  m
        for (MutableEdge<LongWritable, DoubleWritable> edge : getMutableEdges()) {
            edge.setValue(new DoubleWritable(edge.getValue().get() / outEdgeSum));
        }
    } else {
        double messageSum = 0;
        for (DoubleWritable message : messages) {
            messageSum += message.get();
        }
        getValue().set((0.15f / getTotalNumVertices()) + 0.85f * messageSum);
    }

    if (getSuperstep() < getConf().getInt(SUPERSTEP_COUNT, 0)) {
        for (Edge<LongWritable, DoubleWritable> edge : getEdges()) {
            sendMessage(edge.getTargetVertexId(), new DoubleWritable(getValue().get() * edge.getValue().get()));
        }
    } else {
        voteToHalt();
    }
}