ScalaからTensorFlowのJava APIを呼びだすぞい ref: http://qiita.com/piyo7/items/d897d7156d87d29cad19

build.sbt

name := "tensorflow-scala"
scalaVersion := "2.12.1"

file0.txt

$ tree
.
├── build.sbt
├── jni
│   └── libtensorflow_jni.dylib
├── lib
│   └── libtensorflow-1.0.0-PREVIEW1.jar
└── src
    └── main
        └── scala
            └── Main.scala

file2.txt

$ sbt run -Djava.library.path=./jni
...
4, 10, 18

Main.scala

import org.tensorflow._

object Main extends App {
  val graph = new Graph()
  val a = graph.opBuilder("Const", "a").
    setAttr("dtype", DataType.INT32).
    setAttr("value", Tensor.create(Array(1, 2, 3))).
    build().
    output(0)

  val b = graph.opBuilder("Const", "b").
    setAttr("dtype", DataType.INT32).
    setAttr("value", Tensor.create(Array(4, 5, 6))).
    build().
    output(0)

  val c = graph.opBuilder("Mul", "c").
    addInput(a).
    addInput(b).
    build().
    output(0)

  val session = new Session(graph)
  val out = new Array[Int](3)
  session.runner().fetch("c").run().get(0).copyTo(out)

  println(out.mkString(", "))
}