原创 機器學習中Training, Validation 和 Test 集合之間的區別
Mostly, we divide the whole set into 3 parts. 1. Training Set Train your model. You can optimize your model, chan
2020-06-16 05:50:41
原创 [Mahout in action]--Recommender System
Mahout User-based Recommender’s Component Interaction The Refresh of Mahout User-based component! The arrow of
2020-06-16 05:50:41
原创 Installing maven 3.3.3 on Ubuntu
sudo apt-get purge -y maven wget http://apache.cs.utah.edu/maven/maven-3/3.3.3/binaries/apache-maven-3.3.3-bin.tar.
2020-06-16 05:50:41
原创 [Java]--Keyword super
1. Acessing Superclass Members If we have Override certain superclass’ method. Perhaps we could invoke the overrid
2020-06-16 05:50:41
原创 [Machine Learning_Andrew Ng]--Sigmoid() Function.
g(z)=11+e−z In octave function g = sigmoid(z) %SIGMOID Compute sigmoid functoon % J = SIGMOID(z) computes the sig
2020-06-16 05:50:41
原创 [LeetCode]--131. Palindrome Partitioning(backTracking && DFS && DP)
1. Problem Given a string s, partition s such that every substring of the partition is a palindrome. Return all pos
2020-02-24 21:42:19
原创 [LeetCode]--242. Valid Anagram(Count table && char array sort())
1. Program Problem Link: https://leetcode.com/problems/valid-anagram/ 2. Solution 2.1. Count Table Solution publi
2020-02-24 21:42:19
原创 [Java]--Singleton vs Static
Singleton Key Point: 1. Only one instance for the singleton type class. 2. All values stored in the singleton wi
2020-02-24 21:42:19
原创 [Java]--Java static keyword – Class, Method, Variable, Block, import
The Link:http://www.journaldev.com/1365/java-static-keyword-class-method-variable-block-import 1. Java static vari
2020-02-24 21:42:19
原创 [Java]--final key word
To be simple, items declared with the final word can not be changed. final class: can not be extended by any subcl
2020-02-24 21:42:19
原创 Hyperparameters in Machine Learning
In machine learning, we use the term hyperparameter to distinguish from standard model parameters. So, it is worth
2020-02-24 21:42:19
原创 [Machine_Learning]--Backpropagation
這裏只提供一些關於反向傳播（Backpropagation）鏈接資源, this is part of the neural network. And neural network is basis of deep learnin
2020-02-24 21:42:19
原创 Access Modifier(Private & Protected & Public)
http://stackoverflow.com/questions/215497/in-java-difference-between-default-public-protected-and-private
2020-02-24 21:42:19
原创 [Mahout in Action] Representating Recommender Data
In-memory representations without preference values GenericBooleanPrefDataModel , which is similar with GenericData
2020-02-24 21:42:19
原创 [Machine Learning]---ROC(Receiver Operating Characteristic) Curve
1. Some Basic Concepts True Positive Rate: TPR=TPTP+FN False Positive Rate FPR=FPFP+TN 2. ROC Curve ROC use the
2020-02-24 21:42:19