Coral_2014-优快云博客

原创解决绘制theano图形时出现的`Runtime Error: Failed to import pydot’错误

解决绘制theano图形时出现的Runtime Error: Failed to import pydot’错误错误信息当我在练习theano官方例程时，遇到的一个错误。根据报错信息，可以判断出在代码执行pydotprint函数时需要依赖pydot和graphviz的python模块。但是，我使用pip list查看，发现已经安装了pydot和graphviz的程序包。单独执行import

2016-06-23 17:16:29 5802

原创 python开源库——h5py快速指南

核心概念一个HDF5文件是一种存放两类对象的容器：dataset和group. Dataset是类似于数组的数据集，而group是类似文件夹一样的容器，存放dataset和其他group。在使用h5py的时候需要牢记一句话：groups类比词典，dataset类比Numpy中的数组。 HDF5的dataset虽然与Numpy的数组在接口上很相近，但是支持更多对外透明的存储特征，如数据压缩，误

2015-12-18 18:14:32 64750 1

转载 Embedded vision: we’re only at the beginning

Embedded vision: we’re only at the beginning03/09/2014 / Marco Jacobshttp://www.videantis.com/embedded-vision-were-only-at-the-beginning.htmlSmart image analysis has enormous poten

2014-12-18 17:27:52 923

原创 Cross Validation in machine learning

Cross Validation is a basic method to estimate predictive performance of a supervised learning model on unknown data, i.e. to assess the power of generalization of a model.Why we need Cross Validati

2014-11-05 11:41:11 1383

原创 Why data normalization in SVM

Data normalization is generally performed during the data preprocessing step.

2014-11-04 09:46:24 5396

原创 Display Multiple Images in Single Window in OpenCV

In MATLAB, it is easy to plot multiple graph in single figure. we use only one command to do this:

2014-11-01 20:22:42 4442

原创 Performance Measures and Evaluation on IR System

All common measures generally assume a ground truth notion of relevance: every document is known to be either relevant or non-relevance to a particular query.1. Precision and RecallPrecision

2014-02-28 13:30:41 1035

yudf2010的专栏