heucoder / dimensionality_reduction_alo_codes Goto Github PK
View Code? Open in Web Editor NEW特征提取/数据降维:PCA、LDA、MDS、LLE、TSNE等降维算法的python实现
License: Apache License 2.0
dimensionality_reduction_alo_codes's People
Contributors
Stargazers
Watchers
Forkers
wysamuel gppyeye fkshi sundycoders emmanuelgiwu ymbkxc zxk0029 aust-hansen zzlmljk qianrenjian yishuihanhan lhhriver qing0991 wangwangsuibinbin yangjim small-guo-guo zhangyafeii caobocong cubayang liudenaxietian hmliangliang wyvern92 20170505a fatancy2580 zhousishuo blank-wang eliasyu0210 wzy14582 marksendong toolazy2cruel xueyhchina thefigher tqdavid liuwenhaha mediv01 xiongpan826 peisenli heravles liushuaicare fyh97 sapphire921 ghgmail allen15rg spencershi typanda hunterhawk yjinyyzyq feuerwerk99 guoyin90 cyx19991019 liy-project askintution jiejunnan jdc08161063 honeywood suradabang qianmuluo kuan-li jiamim legendtianjin tommylitlle frank-lb tchigher drpengsong yx1900 tanwey dreadlord1984 1huang iamsile zhangy0210 ymli1997 coderxiaobai1 medical-imaging xw-jia riantr soujie sheep0801 kaixinhuaihuai paopaoai11 csccsccsccsc openlibwithfork leefords ripingit xiaojingdounaodan yyz940922 unnamedmaple zwbjtu123 jasonps2015 shartoo yingdajun wikipedia2008 jeezen qihangwang yingyan001 tonylincon ccf19881030 xiaoliang008 ks3dev xuqy1981 syuanbodimensionality_reduction_alo_codes's Issues
LDA.py矩阵乘法使用错误
S = np.linalg.inv(Sw)*SB
Sw和SB都是ndarray，那么这里的乘号含义应该是矩阵各个位置相乘。如果我没有搞错的话，应该改为矩阵乘法（.dot）才对吧？
这样改的话，结果跟sklearn里边的也比较像。
reconstruct版里边的实现和这个一样。我不确定仓库里是否有其他类似问题。
（写作业的时候发现对不上，研究了好久。说实话，numpy里边一种乘号还能有两种意义的，实在是令人震惊...）
About how to use myself datasets
Thank you very much for sharing your code. I want to use tSNE to visualize my dataset. How can I transform the dataset? In the tSNE example, the input is (n, d), and my image dataset is (n, c, h, w)
lle的一处代码逻辑warn，不影响结果运行的小问题
使用鸢尾花数据集，自实现的Isomap算法和sklearn_Isomap差异很大
from sklearn import datasets
iris_data = datasets.load_iris()
X= iris_data.data
Y= iris_data.target
用上述代码测试了一下，差异很大呢
为什么my_pca跟sklearn的图方向相反呢
我照着老师的算法写的代码跑出来也是这个结果
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.