Algorithms - 随笔分类(第9页) - Zhentiw

[ML] Daily Portfolio Statistics

摘要：Let's you have $10000, and you inverst 4 stocks. ['SPY', 'IBM', 'XOM', 'GOOG']. The allocation is [0.4, 0.4, 0.1, 0.1] separately. The way to calculat 阅读全文

posted @ 2018-01-17 20:02 Zhentiw 阅读(323) 评论(0) 推荐(0)

[Python] Scatter Plot for daily return

摘要：Sploe = 2: means that SPY move up 1, ABC move up 2 Correlation: how close those dots close to the line. 阅读全文

posted @ 2018-01-09 02:57 Zhentiw 阅读(704) 评论(0) 推荐(0)

[Python] Histograms for analysis Daily return

摘要：A histogram is an accurate representation of the distribution of numerical data. Y axis is the occurances, X axis is the % of daily return. There are 阅读全文

posted @ 2017-12-28 21:34 Zhentiw 阅读(903) 评论(0) 推荐(0)

[Python] numpy fillna() for Dataframe

摘要：In the store marketing, for many reason, one stock's data can be incomplete: We can use 'forward fill' and 'backward fill' to fill the gap: forward fi 阅读全文

posted @ 2017-12-22 02:41 Zhentiw 阅读(3248) 评论(0) 推荐(0)

[Python] Statistical analysis of time series

摘要：Global Statistics: Common seen methods as such 1. Mean 2. Median 3. Standard deviation: the larger the number means it various a lot. 4. Sum. Rolling 阅读全文

posted @ 2017-12-21 21:30 Zhentiw 阅读(819) 评论(0) 推荐(0)

[Javascript] Identify the most important words in a document using tf-idf in Natural

摘要：Tf-idf, or term frequency-inverse document frequency, is a statistic that indicates how important a word is to the entire document. This lesson will e 阅读全文

posted @ 2017-10-03 20:38 Zhentiw 阅读(407) 评论(0) 推荐(0)

[Javascript] Classify JSON text data with machine learning in Natural

摘要：In this lesson, we will learn how to train a Naive Bayes classifier and a Logistic Regression classifier - basic machine learning algorithms - on JSON 阅读全文

posted @ 2017-10-03 20:23 Zhentiw 阅读(615) 评论(0) 推荐(0)

[Javascript] Classify text into categories with machine learning in Natural

摘要：In this lesson, we will learn how to train a Naive Bayes classifier or a Logistic Regression classifier - basic machine learning algorithms - in order 阅读全文

posted @ 2017-10-03 19:20 Zhentiw 阅读(226) 评论(0) 推荐(0)

[TS] Implement a doubly linked list in TypeScript

摘要：In a doubly linked list each node in the list stores the contents of the node and a pointer or reference to the next and the previous nodes in the lis 阅读全文

posted @ 2017-10-03 01:56 Zhentiw 阅读(934) 评论(0) 推荐(0)

[TS] Implement a singly linked list in TypeScript

摘要：In a singly linked list each node in the list stores the contents of the node and a reference (or pointer in some languages) to the next node in the l 阅读全文

posted @ 2017-10-02 19:01 Zhentiw 阅读(434) 评论(0) 推荐(0)

[Algorithms] Binary Search Algorithm using TypeScript

摘要：(binary search trees) which form the basis of modern databases and immutable data structures. Binary search works very much the way humans intuitively 阅读全文

posted @ 2017-07-21 20:05 Zhentiw 阅读(293) 评论(0) 推荐(0)

Dynamic Programming for TSP

摘要：See how Dynamic programming working for TSP: Check this link: http://www.youtube.com/watch?v=IUzE1MbjoVs 阅读全文

posted @ 2013-10-28 01:53 Zhentiw

Answer1215

随笔分类 - Algorithms

公告