forked from kscience/kmath
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docs | ||
src | ||
build.gradle.kts | ||
README.md |
ND4J NDStructure implementation (kmath-nd4j
)
This subproject implements the following features:
- nd4jarraystructure : NDStructure wrapper for INDArray
- nd4jarrayrings : Rings over Nd4jArrayStructure of Int and Long
- nd4jarrayfields : Fields over Nd4jArrayStructure of Float and Double
Artifact:
This module artifact:
space.kscience:kmath-nd4j:0.2.0
.Gradle:
repositories { maven { url 'https://repo.kotlin.link' } maven { url 'https://dl.bintray.com/hotkeytlt/maven' } maven { url "https://dl.bintray.com/kotlin/kotlin-eap" } // include for builds based on kotlin-eap // Uncomment if repo.kotlin.link is unavailable // maven { url 'https://dl.bintray.com/mipt-npm/kscience' } // maven { url 'https://dl.bintray.com/mipt-npm/dev' } } dependencies { implementation 'space.kscience:kmath-nd4j:0.2.0' }
Gradle Kotlin DSL:
repositories { maven("https://repo.kotlin.link") maven("https://dl.bintray.com/kotlin/kotlin-eap") // include for builds based on kotlin-eap maven("https://dl.bintray.com/hotkeytlt/maven") // required for a // Uncomment if repo.kotlin.link is unavailable // maven("https://dl.bintray.com/mipt-npm/kscience") // maven("https://dl.bintray.com/mipt-npm/dev") } dependencies { implementation("space.kscience:kmath-nd4j:0.2.0") }
Examples
NDStructure wrapper for INDArray:
import org.nd4j.linalg.factory.*
import scientifik.kmath.nd4j.*
import scientifik.kmath.structures.*
val array = Nd4j.ones(2, 2).asRealStructure()
println(array[0, 0]) // 1.0
array[intArrayOf(0, 0)] = 24.0
println(array[0, 0]) // 24.0
Fast element-wise and in-place arithmetics for INDArray:
import org.nd4j.linalg.factory.*
import scientifik.kmath.nd4j.*
import scientifik.kmath.operations.*
val field = RealNd4jArrayField(intArrayOf(2, 2))
val array = Nd4j.rand(2, 2).asRealStructure()
val res = field {
(25.0 / array + 20) * 4
}
println(res.ndArray)
// [[ 250.6449, 428.5840],
// [ 269.7913, 202.2077]]
Contributed by Iaroslav Postovalov.