Swear Words in Review: Regiospecificity and Predictability

顧客評價中的英文髒話：地區特異性及可預測性

Abstract

This report is aimed to answer the following two questions. 1. Does the use of swear words have any regiospecificity that result in heterogeneous in the data? 2. Does the use of swear words in customers' review have an impact on the ratings they gave? Can it predict the stars they gave toward a business? Mainly, analysis using ANOVA on metropolis, multiple regression on ratings are performed. Results indicate that the usage of swear words is different by region and 25 of 45 swear words have predictability on the rating a customer gave. All code and files can be obtained from the link in the end.

Data Science Capstone Quiz

Introduction

• All quiz questions are from Coursera Data Science Capstone course.
• All .json files are provided by Yelp.
• Data sources is hiden for privacy concern.
• Thief-welcome.

被限制的進化：從演化觀點理解貧富差距

Restricted Evolution: A Evolutionary Perspective Toward Economic Inequality

        最近一直在思考貧富差距，說是最近，但也有一段時間了吧。不知道為什麼，最近漸漸覺得，貧富差距真是很有趣，把鐘點戰再看了一遍，貧富差距就是在演化吧。

        富者總是需要貧者，因為需要有勞力來生產，那些玩弄貨幣的人，永遠都可以有更多的資本去創造更高的收益；而若沒了富者，貧者雖能過活，但卻無法刺激進步，因為物質本身的價值有無法突破的物理限制，只有在炒價後才能提升，進而刺激生產。貧者與富者本就互相需要，因此當兩者之間的交流破裂，注定會造成損失。