org.apache.giraph.graph.Vertex.addEdge()方法的使用及代码示例

x33g5p2x  于2022-02-01 转载在 其他  
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本文整理了Java中org.apache.giraph.graph.Vertex.addEdge()方法的一些代码示例，展示了Vertex.addEdge()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Vertex.addEdge()方法的具体详情如下：
包路径：org.apache.giraph.graph.Vertex
类名称：Vertex
方法名：addEdge

Vertex.addEdge介绍

[英]Add an edge for this vertex (happens immediately)
[中]为该顶点添加边（立即发生）

代码示例

代码示例来源：origin: org.apache.giraph/giraph-core

  1. /**
  2.  * Add edges to the Vertex.
  3.  *
  4.  * @param vertex Vertex to add edges to
  5.  * @param vertexChanges contains edges to add
  6.  */
  7. protected void addEdges(Vertex<I, V, E> vertex,
  8.             VertexChanges<I, V, E> vertexChanges) {
  9.  if (vertex == null) {
  10.   return;
  11.  }
  12.  if (hasEdgeAdditions(vertexChanges)) {
  13.   for (Edge<I, E> edge : vertexChanges.getAddedEdgeList()) {
  14.    vertex.addEdge(edge);
  15.   }
  16.  }
  17. }

代码示例来源：origin: org.apache.giraph/giraph-core

  1. /**
  2.  * Add an edge to an existing vertex
  3.  *
  4.  * @param vertexId Edge origin
  5.  * @param edgePair The edge
  6.  * @return this
  7.  */
  8. public TestGraph<I, V, E> addEdge(I vertexId, Entry<I, E> edgePair) {
  9.  if (!vertices.containsKey(vertexId)) {
  10.   Vertex<I, V, E> v = conf.createVertex();
  11.   v.initialize(vertexId, conf.createVertexValue());
  12.   vertices.put(vertexId, v);
  13.  }
  14.  vertices.get(vertexId)
  15.   .addEdge(EdgeFactory.create(edgePair.getKey(),
  16.                        edgePair.getValue()));
  17.  return this;
  18. }

代码示例来源：origin: org.apache.giraph/giraph-core

  1. /**
  2.  * Add an edge to an existing vertex
  3.  *
  4.  * @param vertexId Edge origin
  5.  * @param toVertex Edge destination
  6.  * @param edgeValue Edge value
  7.  * @return this
  8.  */
  9. public TestGraph<I, V, E> addEdge(I vertexId, I toVertex, E edgeValue) {
  10.  if (!vertices.containsKey(vertexId)) {
  11.   Vertex<I, V, E> v = conf.createVertex();
  12.   v.initialize(vertexId, conf.createVertexValue());
  13.   vertices.put(vertexId, v);
  14.  }
  15.  vertices.get(vertexId)
  16.   .addEdge(EdgeFactory.create(toVertex, edgeValue));
  17.  return this;
  18. }
  19. /**

代码示例来源：origin: org.apache.giraph/giraph-core

  1. /**
  2.  * Add vertex
  3.  *
  4.  * @param vertex Vertex
  5.  * @return this
  6.  */
  7. public TestGraph<I, V, E> addVertex(Vertex<I, V, E> vertex) {
  8.  Vertex<I, V, E> previousVertex = vertices.get(vertex.getId());
  9.  if (previousVertex != null) {
  10.   vertexValueCombiner.combine(previousVertex.getValue(), vertex.getValue());
  11.   for (Edge<I, E> edge : vertex.getEdges()) {
  12.    previousVertex.addEdge(edge);
  13.   }
  14.  } else {
  15.   vertices.put(vertex.getId(), vertex);
  16.  }
  17.  return this;
  18. }

代码示例来源：origin: grafos-ml/okapi

  1. @Override
  2.  public void compute(Vertex<I, V, E> vertex,
  3.    Iterable<MessageWrapper<I,M1>> messages) throws IOException {
  4.   for (MessageWrapper<I,M1> msg : messages) {
  5.    E edgeValue = vertex.getEdgeValue(msg.getSourceId());
  6.    
  7.    if (edgeValue == null) {
  8.     I clonedId = null;
  9.     E clonedEdgeValue = null;
  10.     
  11.     try {
  12.      clonedId = (I)msg.getSourceId().getClass().newInstance();
  13.      clonedEdgeValue = (E)msg.getMessage().getClass().newInstance();
  14.     } catch (InstantiationException e) {
  15.      throw new IOException(e);
  16.     } catch (IllegalAccessException e) {
  17.      throw new IOException(e);
  18.     }
  19.     
  20.     ReflectionUtils.copy(
  21.       getContext().getConfiguration(), msg.getSourceId(), clonedId);
  22.     ReflectionUtils.copy(
  23.       getContext().getConfiguration(), msg.getMessage(), clonedEdgeValue);
  24.     
  25.     Edge<I, E> edge = EdgeFactory.create(clonedId, clonedEdgeValue);
  26.     vertex.addEdge(edge);
  27.    } 
  28.   }
  29.  }
  30. }

代码示例来源：origin: grafos-ml/okapi

  1. public void sampleIrrelevantEdges(
  2.   Vertex<CfLongId, FloatMatrixWritable, BooleanWritable> vertex) {
  3.  if (vertex.getId().isUser()){//only users
  4.   Iterable<Edge<CfLongId, BooleanWritable>> edges = vertex.getEdges();
  5.   HashSet<CfLongId> relevant = new HashSet<CfLongId>();
  6.   for (Edge<CfLongId, BooleanWritable> e : edges) {
  7.    relevant.add(e.getTargetVertexId());
  8.   }
  9.   for (int i=0; i<numberSamples; i++){
  10.    CfLongId random = getRandomItemId(relevant);
  11.    vertex.addEdge(EdgeFactory.create(random, new BooleanWritable(false)));
  12.   }
  13.  }
  14. }

代码示例来源：origin: grafos-ml/okapi

  1. @Override
  2. public void compute(
  3.     Vertex<LongWritable, VertexValue, EdgeValue> vertex,
  4.     Iterable<LongWritable> messages) throws IOException {
  5.   for (LongWritable other : messages) {
  6.     EdgeValue edgeValue = vertex.getEdgeValue(other);
  7.     if (edgeValue == null) {
  8.       edgeValue = new EdgeValue();
  9.       edgeValue.setWeight((byte) 1);
  10.       Edge<LongWritable, EdgeValue> edge = EdgeFactory.create(
  11.           new LongWritable(other.get()), edgeValue);
  12.       vertex.addEdge(edge);
  13.     } else {
  14.       edgeValue = new EdgeValue();
  15.       edgeValue.setWeight(edgeWeight);
  16.       vertex.setEdgeValue(other, edgeValue);
  17.     }
  18.   }
  19. }

代码示例来源：origin: org.apache.giraph/giraph-core

  1. @Override
  2. public boolean putOrCombine(Vertex<I, V, E> vertex) {
  3.  Vertex<I, V, E> originalVertex = vertexMap.get(vertex.getId());
  4.  if (originalVertex == null) {
  5.   originalVertex =
  6.     vertexMap.putIfAbsent(vertex.getId(), vertex);
  7.   if (originalVertex == null) {
  8.    return true;
  9.   }
  10.  }
  11.  synchronized (originalVertex) {
  12.   // Combine the vertex values
  13.   getVertexValueCombiner().combine(
  14.     originalVertex.getValue(), vertex.getValue());
  15.   // Add the edges to the representative vertex
  16.   for (Edge<I, E> edge : vertex.getEdges()) {
  17.    originalVertex.addEdge(edge);
  18.   }
  19.  }
  20.  return false;
  21. }

代码示例来源：origin: org.apache.giraph/giraph-core

  1. /**
  2.  * Combine two vertices together and store the serialized bytes
  3.  * in the vertex map.
  4.  *
  5.  * @param representativeVertex existing vertex
  6.  * @param representativeCombinerVertex new vertex to combine
  7.  */
  8. private void combine(Vertex<I, V, E> representativeVertex,
  9.   Vertex<I, V, E> representativeCombinerVertex) {
  10.  getVertexValueCombiner().combine(representativeVertex.getValue(),
  11.    representativeCombinerVertex.getValue());
  12.  // Add the edges to the representative vertex
  13.  for (Edge<I, E> edge : representativeCombinerVertex.getEdges()) {
  14.   representativeVertex.addEdge(edge);
  15.  }
  16.  vertexMap.put(representativeCombinerVertex.getId(),
  17.    WritableUtils.writeVertexToByteArray(
  18.      representativeVertex, useUnsafeSerialization, getConf()));
  19. }

代码示例来源：origin: grafos-ml/okapi

  1. @Override
  2.  public void compute(Vertex<CfLongId, FloatMatrixWritable, FloatWritable> vertex,
  3.    Iterable<FloatMatrixMessage> messages) throws IOException {
  4.   
  5.   FloatMatrixWritable vector = 
  6.     new FloatMatrixWritable(getContext().getConfiguration().getInt(
  7.     VECTOR_SIZE, VECTOR_SIZE_DEFAULT));
  8.   Random randGen = new Random();
  9.   for (int i=0; i<vector.length; i++) {
  10.    vector.put(i, 0.01f*randGen.nextFloat());
  11.   }
  12.   vertex.setValue(vector);
  13.   
  14.   for (FloatMatrixMessage msg : messages) {
  15.    DefaultEdge<CfLongId, FloatWritable> edge = 
  16.      new DefaultEdge<CfLongId, FloatWritable>();
  17.    edge.setTargetVertexId(msg.getSenderId());
  18.    edge.setValue(new FloatWritable(msg.getScore()));
  19.    vertex.addEdge(edge);
  20.   }
  21.   
  22.   // The score does not matter at this point.
  23.   sendMessageToAllEdges(vertex, 
  24.     new FloatMatrixMessage(vertex.getId(), vertex.getValue(), 0.0f));
  25.   
  26.   vertex.voteToHalt();
  27.  }
  28. }

代码示例来源：origin: grafos-ml/okapi

  1. @Override
  2.  public void compute(Vertex<CfLongId, FloatMatrixWritable, 
  3.    FloatWritable> vertex, Iterable<FloatMatrixMessage> messages) 
  4.      throws IOException {
  5.   
  6.   FloatMatrixWritable vector = 
  7.     new FloatMatrixWritable(getContext().getConfiguration().getInt(
  8.     VECTOR_SIZE, VECTOR_SIZE_DEFAULT));
  9.   Random randGen = new Random();
  10.   for (int i=0; i<vector.length; i++) {
  11.    vector.put(i, 0.01f*randGen.nextFloat());
  12.   }
  13.   vertex.setValue(vector);
  14.   
  15.   for (FloatMatrixMessage msg : messages) {
  16.    DefaultEdge<CfLongId, FloatWritable> edge = 
  17.      new DefaultEdge<CfLongId, FloatWritable>();
  18.    edge.setTargetVertexId(msg.getSenderId());
  19.    edge.setValue(new FloatWritable(msg.getScore()));
  20.    vertex.addEdge(edge);
  21.   }
  22.   
  23.   // The score does not matter at this point.
  24.   sendMessageToAllEdges(vertex, 
  25.     new FloatMatrixMessage(vertex.getId(), vertex.getValue(), 0.0f));
  26.   
  27.   vertex.voteToHalt();
  28.  }
  29. }

代码示例来源：origin: org.apache.giraph/giraph-examples

  1. " on superstep " + getSuperstep());
  2. vertex.addEdge(newEdge);
  3. sendMessage(edge.getTargetVertexId(),
  4.   new VerifiableMessage(

代码示例来源：origin: org.apache.giraph/giraph-examples

  1. " to vertex " + edge.getTargetVertexId() +
  2.   " on superstep " + getSuperstep());
  3. vertex.addEdge(newEdge);
  4. sendMessage(edge.getTargetVertexId(), newEdgeValue);

代码示例来源：origin: grafos-ml/okapi

  1. edge.setTargetVertexId(msg.getSenderId());
  2. edge.setValue(new FloatWritable(msg.getScore()));
  3. vertex.addEdge(edge);

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