Tag：Data analysis
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Time：2020-1-13
This project is from the 6th issue of “building + data analysis and mining practice” of the experimental building. “Building + data analysis and mining practice” is a course content customized for the junior engineer of data analysis or data mining in the experimental building. It includes 35 experiments, 20 challenges, 5 comprehensive projects and […]
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Time：2020-1-9
Alimei’s Guide:In this era of “everyone is a data analyst”, almost all of Ali’s students are involved in data collection, processing and consumption. As an important link of “processing consumption”, the quality of data visualization is very important. Good visualization leads to excellent insight, and bad content makes all efforts meaningless. Today, Ali senior product […]
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Time：2019-12-8
Recently Alibaba shared the PPT of Alibaba data in Taiwan practice (searching original articles by itself). We still need to learn from the founder of data in Taiwan with great respect. So we carefully read it and hope to find something different. Reading these professional ppts is actually very time-consuming. You need to peel off […]
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Time：2019-11-28
Dynamodb is a NoSQL database service implemented by Amazon based on dynamo: Amazon’s highly available key value store. It can meet the seamless expansion of database, and ensure the data persistence and high availability. Developers don’t have to pay attention to dynamodb’s maintenance, expansion, performance and other issues. It is fully hosted by Amazon, and […]
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Time：2019-11-5
Preface Spark is a very popular big data processing engine. Data scientists use spark and related ecological big data suite to complete a large number of data analysis and mining of rich scenes. Spark has gradually become the industry standard in the field of data processing. But Spark’s own design is more inclined to use […]
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Time：2019-11-1
Preface Any online system cannot do without data. Some data are needed by the business system itself, such as the system account, password, page display content, etc. Some data are generated by business system or users in real time, such as business system logs, user browsing records, system purchase orders, payment information, member personal data, […]
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Time：2019-10-26
Abstract:Neural network has powerful function, but its interior is complex and opaque, so it is called black box tool. Topological data analysis is used to describe the function and learning process of convolutional neural network in a compact and understandable way. 1. introduction Neural network has achieved great success in various data processing, including image, […]
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Time：2019-10-25
The 2019 Alibaba cloud summit Shanghai developers conference opened on July 24. This summit and future developers of the world share technology dry goods in open source big data, it infrastructure cloudization, database, cloud native, Internet of things and other fields, and jointly discuss cutting-edge technology trends. This article collates the wonderful speech of Wang […]
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Time：2019-10-13
Some time ago, the data leak of a hotel group caused a great disturbance. The leaked data included user name, mobile phone number, mailbox, identity card number and other information. Sellers packaged around 500 million pieces of data and sold them for 8 bits or 520 Monroes. However, the reasons for this information leak have […]
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Time：2019-9-30
Preface Some time ago, the GitHub crash almost broke down the mentality, and simply bought an Aliyun server to migrate the personal website.The server image is selected for the nodejs application, which is pre-installed with nginx. Other configurations of nginx are not much to say.This paper mainly describes how to analyze nginx log data through […]
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Time：2019-9-22
Chi-square test, or x2 test, is known as one of the 20 great inventions in all branches of science and technology in the twentieth century. Carl Pearson, the inventor of chi-square test, is a rare encyclopedic scholar in history. His research field covers biology, history, religion, philosophy and law. Before doing text categorization project, we […]
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Time：2019-9-21
Author introduction:Wei Wan is a research and Development Engineer of PingCAP database. His main fields are the research and development of database storage engine and system performance optimization. First, why do we need HTAP databases? Before the advent of the Internet wave, the data volume of enterprises was generally small, especially the core business data, […]
