...m(y_ * tf.log(y), reduction_indices=[1])) optimizer = tf.train.GradientDescentOptimizer(0.5) train = optimizer.minimize(loss) init = tf.initialize_all_variables() sess = tf.Sessio...
...文了,在此我就不赘述了。SGD此处的SGD指mini-batch gradient descent,关于batch gradient descent, stochastic gradient descent, 以及 mini-batch gradient descent的具体区别就不细说了。现在的SGD一般都指mini-batch gradient descent。SGD就是每一次迭代计算m...
...Set the learning rate learning_rate = 0.1 # Start performing the gradient descent updates, and print the weights and cost: nb_of_iterations = 4 # number of gradient descent updates w_cost = [(w, c...
...函数(Logistic Regression Cost Function) 2.4 梯度下降(Gradient Descent) 2.5 导数(Derivatives) 2.6 更多的导数例子(More Derivative Examples) 2.7 计算图(Computation Graph) 2.8 计算图导数(Derivatives with a Computation Graph)...
...t elements font size). In the absence of these metrics, the Ascent and Descent metrics from the HHEA table should be used. 字体的 A 和 D 两部分是根据 OS/2 表中 sTypoAscender 和 sTypoDescender 或者 HHEA 表中的 Ascent...
...r Machine Learning]30 Softmax Regression (ufldl.stanford.edu) Gradient Descent Learning with gradient descent (neuralnetworksanddeeplearning.com) Gradient Descent (iamtrask.github.io) How to...
...如图: 最后,把梯度下降法封装到方法中: def gradient_descent(initial_theta, eta, n_iters=1e4, epsilon=1e-8): theta = initial_theta i_ters = 0 while i_ters < n_iters: gradient = dJ(theta) ...
...最佳的那一对,让 Loss Function $L$ 最小。 第四步:Gradient Descent 上面说的穷举真不是一个好办法(基本没法实现),那我们能不能找一个更好、更有效率的办法解决这个问题呢?有! 用线性代数的办法:求解非齐次线性方程组(...
ChatGPT和Sora等AI大模型应用,将AI大模型和算力需求的热度不断带上新的台阶。哪里可以获得...
大模型的训练用4090是不合适的,但推理(inference/serving)用4090不能说合适,...
图示为GPU性能排行榜,我们可以看到所有GPU的原始相关性能图表。同时根据训练、推理能力由高到低做了...