@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
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JavaScript
;
/**
* @license
* Copyright 2020 Google Inc. All Rights Reserved.
* 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.
* =============================================================================
*/
Object.defineProperty(exports, "__esModule", { value: true });
var array_ops_1 = require("./array_ops");
var operation_1 = require("./operation");
var rand_util_1 = require("./rand_util");
/**
* Creates a `tf.Tensor` with values sampled from a gamma distribution.
*
* ```js
* tf.randomGamma([2, 2], 1).print();
* ```
*
* @param shape An array of integers defining the output tensor shape.
* @param alpha The shape parameter of the gamma distribution.
* @param beta The inverse scale parameter of the gamma distribution. Defaults
* to 1.
* @param dtype The data type of the output. Defaults to float32.
* @param seed The seed for the random number generator.
*/
/** @doc {heading: 'Tensors', subheading: 'Random'} */
function randomGamma_(shape, alpha, beta, dtype, seed) {
if (beta === void 0) { beta = 1; }
if (dtype === void 0) { dtype = 'float32'; }
if (beta == null) {
beta = 1;
}
if (dtype == null) {
dtype = 'float32';
}
if (dtype !== 'float32' && dtype !== 'int32') {
throw new Error("Unsupported data type " + dtype);
}
var rgamma = new rand_util_1.RandGamma(alpha, beta, dtype, seed);
var res = array_ops_1.buffer(shape, dtype);
for (var i = 0; i < res.values.length; i++) {
res.values[i] = rgamma.nextValue();
}
return res.toTensor();
}
exports.randomGamma = operation_1.op({ randomGamma_: randomGamma_ });
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