从分布p(z)采样很容易, 因为积分的 Monte Carlo evaluation 所需要的。 其他很多领域的研究已经研究过log-derivative trick, 并给出了和他们的问题表述相关的名字, 包括: Score function estimators:我们的微分允许我们将期望的梯度转换为 score function\nabla_\theta \log p(z ; \theta)的期望, 使得很自然地得...
总结而言，Log Derivative Trick 使我们能够在正常化概率和对数概率之间进行转换，它是分数函数的基础，也是最大似然估计的关键。它为随机优化问题提供了一种通用的梯度估计方法，是当前许多最重要的机器学习问题的基础。为了实现通用机器学习，理解 Monte Carlo 梯度估计及其上建立的技巧至关重要。参考文献：...
. Furthermore, we might want to compute this gradient when the functionfis not differentiable. Using the log derivative trick and the properties of the score function, we can compute this gradient in a more amenable way: Let's derive this expression and explore the implications of it for our...
Dracula(1931) – I read Bram Stoker’s novel of the same name early on in the marathon and went on a bit of kick of adaptations (and derivative novels, which we’ll cover in another post), resulting in amid-week themepost, but I watched a few other adaptations, including a revisit o...
as in the sequence where Sammy Fabelman edits home movies from the family’s recent vacation and makes a shocking discovery (a sequence that recallsBlow UpandBlow Outwithout feeling derivative at all), it becomes gold. We take late-stage Spielberg for granted, I think, but I’ll always be...
where is the natural logarithm. It provides an approximation to the largest element of , which is given by the function, . Indeed, and on taking logs we obtain The log-sum-exp function can be thought of as a smoothed version of the max function, because whereas the max function is not...
The first step is the trickiest. What do you want to do is put water on Poha but not to let it be soggy. There is an accessory similar to tea filter but forgot the name, it basically drains all the extra moisture and you want Poha to be a bit fluffy and not soggy. The Poha ...
The Holy Grail (“Ghral” is holy stone, Persian-Arabic) was said to be a black-violet crystal, half quartz, half amethyst, through which Higher Powers communicated with humanity. It was given into the safe-keeping of the Cathars, and smuggled out of the last stronghold at Montsegur, Fra...
08:01 jdub anyway, this could be a derivative livecd 08:01 jdub for demos 08:01 sabdfl yes 08:01 jdub and stuff 08:01 mdz I think we should probably leave the package list alone for hoary 08:01 mdz for the live CD 08:01 mdz i.e., match desktop ...
Optimization algorithms generate matrices of derivative values which are used to adjust matrices of weights W and biases B. Generating derivative values may use and require storing matrices of intermediate values generated when computing activation values for each layer. The number of neurons and/or ...