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KMP library for tensors #300

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grinisrit merged 215 commits from feature/tensor-algebra into dev 2021-05-08 09:48:04 +03:00
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kmath-tensors/src/commonMain/kotlin/space/kscience/kmath/tensors/core/algebras/DoubleTensorAlgebra.kt
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@ -493,14 +493,12 @@ public open class DoubleTensorAlgebra : TensorPartialDivisionAlgebra<Double> {
DoubleTensor(tensor.shape, getRandomNormals(tensor.shape.reduce(Int::times), seed))
/**
* Concatenates a sequence of tensors along the first dimension.
* Concatenates a sequence of tensors with equal shapes along the first dimension.
*
* @param tensors the [List] of tensors with same shapes to concatenate
* @param dim the dimension to insert
* @return tensor with concatenation result
*/
public fun stack(tensors: List<Tensor<Double>>, dim: Int = 0): DoubleTensor {
check(dim == 0) { "Stack by non-zero dimension not implemented yet" }
public fun stack(tensors: List<Tensor<Double>>): DoubleTensor {
check(tensors.isNotEmpty()) { "List must have at least 1 element" }
val shape = tensors[0].shape
check(tensors.all { it.shape contentEquals shape }) { "Tensors must have same shapes" }