walks.DeepWalk.scala Maven / Gradle / Ivy
/*
* Copyright 2019 Pierre Nodet
*
* Licensed 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 aruku.walks
import aruku._
import org.apache.spark.graphx.Edge
import org.apache.spark.graphx.VertexId
case object DeepWalk {
def config(numWalkers: Long, numEpochs: Int = 1, parallelism: Int = 1) =
WalkerConfig.constant(
numWalkers,
numEpochs,
parallelism,
(_: VertexId) => DeepWalk,
AtRandom(1.0)
)
def transition(walkLength: Long) =
Transition.static(
(walker: Walker[DeepWalk.type], _: VertexId) => if (walker.step < walkLength) 1.0 else 0.0,
(_: VertexId, edge: Edge[Double]) => edge.attr
)
}