Software MPEG-7 Feature Extraction Library : This library is adapted from MPEG-7 XM Reference Software to make it work with Open Source Computer Vision library (OpenCV) data structures (e.g., IplImage, Mat). It has a very easy-to-use API. Moreover, e…

Feature Engineering versus Feature Extraction: Game On! "Feature engineering" is a fancy term for making sure that your predictors are encoded in the model in a manner that makes it as easy as possible for the model to achieve good performance.…

ufldl学习笔记与编程作业:Feature Extraction Using Convolution,Pooling(卷积和池化抽取特征) ufldl出了新教程,感觉比之前的好,从基础讲起.系统清晰.又有编程实践. 在deep learning高质量群里面听一些前辈说.不必深究其它机器学习的算法.能够直接来学dl. 于是近期就開始搞这个了.教程加上matlab编程,就是完美啊. 新教程的地址是:http://ufldl.stanford.edu/tutorial/ 学习链接: http://u…

Yang, Mingqiang, Kidiyo Kpalma, and Joseph Ronsin. "A survey of shape feature extraction techniques." (2008): 43-90. 转载请注明 黄世宇:http://www.cnblogs.com/huangshiyu13/p/6432647.html. 1.介绍 "一张图片需要很多文字进行描述",这个谚语来自孔子-一个中国大约2500年前的哲学家.现在,这些文字的…

http://scikit-learn.org/stable/modules/feature_extraction.html 带病在网吧里. ..... 写.求支持. .. 1.首先澄清两个概念:特征提取和特征选择( Feature extraction is very different from Feature selection ). the former consists in transforming arbitrary data, such as text or images, in…

http://blog.csdn.net/pipisorry/article/details/41957763 文本特征提取 词袋(Bag of Words)表征 文本分析是机器学习算法的主要应用领域. 可是,文本分析的原始数据无法直接丢给算法.这些原始数据是一组符号,由于大多数算法期望的输入是固定长度的数值特征向量而不是不同长度的文本文件.为了解决问题,scikit-learn提供了一些有用工具能够用最常见的方式从文本内容中抽取数值特征,比方说: 标记(tokenizing)文本以及为每个可能…

论文题目<Deep Feature Extraction and Classification of Hyperspectral Images Based on Convolutional Neural Networks> 论文作者:Y ushi Chen, Member , IEEE, Hanlu Jiang, Chunyang Li, Xiuping Jia, Senior Member , IEEE, and Pedram Ghamisi, Member , IEEE 论文发表年份:20…

http://scikit-learn.org/stable/modules/feature_extraction.html 4.2节内容太多,因此将文本特征提取单独作为一块. 1.the bag of words representation 将raw data表示成长度固定的数字特征向量,scikit-learn提供了三个方式: tokenizing:给每个token(字.词.粒度自己把握)一个整数索引id counting:每一个token在每一个文档中出现的次数 normalizing:…

特征检测 特征描述 特征匹配 特征跟踪 “不读白不读,读了还想读” 的一本基础书 低层次特征提取 阈值方法 1. 边缘检测 一阶检测算子 二阶检测算子 相位一致性(频域) 2. 角点检测(局部特征提取) 3. 光流(optical flow) 一阶边缘检测算子 基础算子:Roberts交叉算子 Prewitt算子 Sobel算子 Canny算子 (most popular recently) 既然号称“最优算子”,那就作为典型,深入一下. Canny 的目标是找到一个最优的边缘检测算法,最优边缘…

http://www.erogol.com/ml-work-flow-part-3-feature-extraction/…