将结果转换为变量 [英] Getting the result into a variable
问题描述
我有以下示例代码。我可以通过打印功能在控制台中看到正确的结果。
I have the following example code. I'm able to see the correct result in the console from the print function.
// Define a model for linear regression.
const model = tf.sequential();
model.add(tf.layers.dense({units: 1, inputShape: [1]}));
model.add(tf.layers.dense({units: 4, inputShape: [1]}));
model.add(tf.layers.dense({units: 10, inputShape: [1]}));
model.add(tf.layers.dense({units: 1, inputShape: [1]}));
// Prepare the model for training: Specify the loss and the optimizer.
model.compile({loss: 'meanSquaredError', optimizer: 'sgd'});
// Generate some synthetic data for training.
const xs = tf.tensor2d([1, 2, 3, 4], [4, 1]);
const ys = tf.tensor2d([1, 3, 5, 7], [4, 1]);
// Train the model using the data.
model.fit(xs, ys).then(() => {
// Use the model to do inference on a data point the model hasn't seen before:
// Open the browser devtools to see the output
answer = model.predict(tf.tensor2d([3], [1, 1]));
answer.print()
});
我希望能够做的是将答案放入数字var中以便我可以在别处使用它。我得到的答案是：
What I'd like to be able to do is to put answer into a number var so that I can use it elsewhere. The answer I get is:
Tensor [[4.9999123],]
但是我想把4.9999变成一个变量，这样我就可以把它四舍五入并在屏幕上打印（用html格式）。
But I'd like to get the 4.9999 into a variable so that I can round it up to 5 and print it on screen (in html).
推荐答案
我发现答案是：
answer.data().then((d)=>{
console.log(d[0])
})
answer有一个返回promise的数据方法。您可以从承诺中获取数据。
answer has a data method which returns a promise. You can get the data from the promise.
我搜索了stackoverflow，这引出了我这个问题：
从张量流量js获取2D张量数据
I searched stackoverflow which lead me to this question: Get data from 2D tensor with tensorflow js
Rocksetta亲切地发布了一个链接他们在以下网站上的代码：
Rocksetta kindly posted a link to their code on the following site:
这篇关于将结果转换为变量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
