math数学 - 随笔分类(第6页) - papering

a positive definite matrix

摘要：https://en.wikipedia.org/wiki/Definite_quadratic_form https://www.math.utah.edu/~zwick/Classes/Fall2012_2270/Lectures/Lecture33_with_Examples.pdf 阅读全文

posted @ 2017-09-28 20:44 papering 阅读(248) 评论(0) 推荐(0)

Cauchy sequence Hilbert space 希尔波特空间的柯西序列

摘要：http://mathworld.wolfram.com/HilbertSpace.html A Hilbert space is a vector space with an inner product such that the norm defined by turns into a comp 阅读全文

posted @ 2017-09-28 15:59 papering 阅读(828) 评论(0) 推荐(0)

拓扑量子位

摘要：http://mp.weixin.qq.com/s/hImjVRMHHEC3SAepAoL2Tw 阅读全文

posted @ 2017-09-28 15:50 papering 阅读(190) 评论(0) 推荐(0)

Frobenius inner product

摘要：https://en.wikipedia.org/wiki/Frobenius_inner_product Frobenius norm 阅读全文

posted @ 2017-09-27 20:01 papering 阅读(1531) 评论(0) 推荐(0)

Residual (numerical analysis)

摘要：In many cases, the smallness of the residual means that the approximation is close to the solution, i.e., 残差：结果的差值误差：近似解与解的差值 https://en.wikipedia.or 阅读全文

posted @ 2017-09-27 19:51 papering 阅读(425) 评论(0) 推荐(0)

How to avoid Over-fitting using Regularization?

摘要：http://www.mit.edu/~9.520/scribe-notes/cl7.pdf https://en.wikipedia.org/wiki/Bayesian_interpretation_of_kernel_regularization the degree to which inst 阅读全文

posted @ 2017-09-27 15:58 papering 阅读(251) 评论(0) 推荐(0)

适定性问题

摘要：适定性问题 zh.wikipedia.org/wiki/適定性問題数学术语适定性问题来自于哈达玛所给出的定义。他认为物理现象中的数学模型应该具备下述性质：适定性问题的原型范例包括对于拉普拉斯方程的狄利克雷问题，以及给定初始条件的热传导方程式。在物理过程中解决的这些问题，也许被视为“自然”问题。相阅读全文

posted @ 2017-09-27 15:10 papering 阅读(1635) 评论(0) 推荐(0)

Numerical Differentiation 数值微分

摘要：zh.wikipedia.org/wiki/數值微分数值微分是数值方法中的名词，是用函数的值及其他已知资讯来估计一函数导数的算法。 http://mathworld.wolfram.com/NumericalDifferentiation.html Numerical differentiatio 阅读全文

posted @ 2017-09-27 14:05 papering 阅读(425) 评论(0) 推荐(0)

What Every Computer Scientist Should Know About Floating-Point Arithmetic

摘要：http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html 阅读全文

posted @ 2017-09-27 13:55 papering 阅读(201) 评论(0) 推荐(0)

Every norm is a convex function

摘要：https://ipfs.io/ipfs/QmXoypizjW3WknFiJnKLwHCnL72vedxjQkDDP1mXWo6uco/wiki/Convex_function.html Every norm is a convex function, by the triangle inequal 阅读全文

posted @ 2017-09-27 11:05 papering 阅读(239) 评论(0) 推荐(0)

Moore-Penrose Matrix Inverse 摩尔－彭若斯广义逆埃尔米特矩阵 Hermitian matrix

摘要：http://mathworld.wolfram.com/Moore-PenroseMatrixInverse.html 显然，埃尔米特矩阵主对角线上的元素都是实数的，其特征值也是实数。对于只包含实数元素的矩阵（实矩阵），如果它是对称阵，即所有元素关于主对角线对称，那么它也是埃尔米特矩阵。也就是说，阅读全文

posted @ 2017-09-27 09:14 papering 阅读(1115) 评论(0) 推荐(0)

Frobenius Norm

摘要：http://mathworld.wolfram.com/FrobeniusNorm.html 阅读全文

posted @ 2017-09-26 10:49 papering 阅读(183) 评论(0) 推荐(0)

L2 范数 L1 范数出租车范数

摘要：https://en.wikipedia.org/wiki/Norm_(mathematics) http://cs231n.github.io/classification/ 阅读全文

posted @ 2017-09-26 10:23 papering 阅读(244) 评论(0) 推荐(0)

Hadamard Product

摘要：http://mathworld.wolfram.com/HadamardProduct.html 阅读全文

posted @ 2017-09-19 16:21 papering 阅读(229) 评论(0) 推荐(0)

cross-correlation convolution. Hermitian_function

摘要：Hermitian_function 阅读全文

posted @ 2017-09-19 15:13 papering 阅读(129) 评论(0) 推荐(0)

S-形函数广泛应用于ANN 的激活函数

摘要：Logistic function hyperbolic tangent arctangent function Gudermannian function Error function Generalised logistic function Smoothstep function Specif 阅读全文

posted @ 2017-09-19 14:27 papering 阅读(601) 评论(0) 推荐(0)

Softmax_function

摘要：en.wikipedia.org/wiki/Softmax_function 阅读全文

posted @ 2017-09-18 12:04 papering 阅读(149) 评论(0) 推荐(0)

Convex combination

摘要：en.wikipedia.org/wiki/Convex_combination 凸组合 In convex geometry, a convex combination is a linear combination of points (which can be vectors, scalars 阅读全文

posted @ 2017-09-18 04:04 papering 阅读(784) 评论(0) 推荐(0)

函数的光滑化或正则化卷积应用两个统计独立变量X与Y的和的概率密度函数是X与Y的概率密度函数的卷积

摘要：http://graphics.stanford.edu/courses/cs178/applets/convolution.html Convolution is an operation on two functions f and g, which produces a third funct 阅读全文

posted @ 2017-09-18 02:59 papering 阅读(1166) 评论(0) 推荐(0)

Convex optimization 凸优化

摘要：zh.wikipedia.org/wiki/凸優化以下问题都是凸优化问题，或可以通过改变变量而转化为凸优化问题：[5] 最小二乘线性规划线性约束的二次规划半正定规划 Convex function Convex minimization is a subfield of optimizati 阅读全文

posted @ 2017-09-17 22:31 papering 阅读(274) 评论(0) 推荐(0)

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随笔分类 - math数学