随笔分类 - 

摘要:y=f(x)=x2, 求f'(x). 直线的斜率k=(y1-y0)/(x1-x0)=((x+d)2 - x2) / (x+d - d) = (2xd + d2) / d = 2x + d = 2x d非常小,无限接近于0,可以被忽略掉。x很大时xd能不能被忽略掉?反正xd/d总等于x。长得像近似解却 阅读全文
posted @ 2022-01-19 13:38 华容道专家
摘要:As of 2 September 2017 GNU Chess 5.60 is rated at 2813 Elo points (when using one CPU) on CCRL's 40-moves-in-40-minutes list. For comparison, the stro 阅读全文
posted @ 2021-12-19 10:23 华容道专家
摘要:https://github.com/pytorch/pytorch PyTorch is a Python package that provides two high-level features: Tensor [张量] computation (like NumPy) with strong 阅读全文
posted @ 2021-12-19 08:00 华容道专家
摘要:AI vs. Machine Learning vs. Deep Learning vs. Neural Networks: What’s the Difference? | IBM 摘要: Deep Learning就像最新式的手机/电脑CPU,游戏等等,好的很。可CPU早就有了,超级玛丽、魂斗罗 阅读全文
posted @ 2021-12-18 21:56 华容道专家
摘要:What is Deep Learning? | IBM 摘要: Deep learning is a subset of machine learning, which is essentially a neural network with three or more layers. Deep 阅读全文
posted @ 2021-12-18 21:23 华容道专家
摘要:线性回归和非线性回归是统计学里的概念。机器学习(百度百科) 非线性回归(百科) | Machine Learning [Python] – Non-linear Regression (geekering.com) | NonlinearRegression.dvi (toronto.edu) y( 阅读全文
posted @ 2021-12-18 20:16 华容道专家
摘要:用过n-gram但没用好,所以改行了。没事瞎琢磨的: n-门问题用来面试不坏。 什么叫句子的概率?设一个语言有10个句子,某个句子100%属于这个语言,P(该句子)=0.1而不是1,因为还有别的句子呢,句子们的概率和是1. 不过在比较句子的概率时,可以大家都放大一个倍数,免得一堆小数字乘到最后成了0 阅读全文
posted @ 2021-12-06 12:42 华容道专家
摘要:search(诊断试验中的贝叶斯定理:检验阳性就一定患病了吗?); search(Bayes' rules, Conditional probability, Chain rule) 10天的统计表: 天 1 2 3 4 5 6 7 8 9 10 乌云 c c c c c Cloud 下雨 r r 阅读全文
posted @ 2021-12-05 14:21 华容道专家