AI Big Data Summit

AI Big data的应用场景是第一位的,从应用场景出发,在实际应用中锻炼大数据的能力 关于转到big data and AI: 兴趣 领域知识集+技术知识集 Others: block chain数据隐私问题 科大讯飞芜湖市政府 信用评级 cmu AI professor to jpmorgan 大数据养猪,好的方法是好的数据养出来的。 p博弈论算法 mp量子计算方法 中国优势:应用场景创新 美国优势:技术创新本身-人才多元化,文化多元化。 我的想法:在美国锻炼技术创新能力 理论大家都懂,关键是工具的利用方法。-Xionghui Continue reading AI Big Data Summit

How a Kalman filter works, in pictures

This is a post from http://www.bzarg.com/p/how-a-kalman-filter-works-in-pictures/ which I believe it is the most intuitive explanation of Kalman filter. I have to tell you about the Kalman filter, because what it does is pretty damn amazing. Surprisingly few software engineers and scientists seem to know about it, and that makes me sad because it is such a general and powerful tool for combining information in the presence of uncertainty. At times its ability to extract accurate information seems almost magical— and if it sounds like I’m talking this up too much, then take a look at this previously posted videowhere I demonstrate … Continue reading How a Kalman filter works, in pictures

How to Tune Algorithm Parameters with Scikit-Learn

by Jason Brownlee on July 16, 2014 in Python Machine Learning Machine learning models are parameterized so that their behavior can be tuned for a given problem. Models can have many parameters and finding the best combination of parameters can be treated as a search problem. In this post you will discover how to tune the parameters of machine learning algorithms in Python using the scikit-learn library. Machine Learning Algorithm Parameters Algorithm tuning is a final step in the process of applied machine learning before presenting results. It is sometimes called Hyperparameter optimization where the algorithm parameters are referred to … Continue reading How to Tune Algorithm Parameters with Scikit-Learn

SQL syntax that you should pay attention to

The article will mainly talk about some pitfalls or important command of general SQL, just mark them and for future reference. Most of the content comes from SQL tutorial .   1. SQL Injection SQL injection is a technique where malicious users can inject SQL commands into an SQL statement, via web page input. Injected SQL commands can alter SQL statement and compromise the security of a web application. SQL Injection Based on 1=1 is Always True Look at the example above, one more time. Let’s say that the original purpose of the code was to create an SQL statement to … Continue reading SQL syntax that you should pay attention to

Difference between process and thread

Though, multiprocess and multithread are all accessible ways to do parallel computing and big data problems, there are some differences between these two terms and I will list some reference and thoughts about this topic. Each process provides the resources needed to execute a program. A process has a virtual address space, executable code, open handles to system objects, a security context, a unique process identifier, environment variables, a priority class, minimum and maximum working set sizes, and at least one thread of execution. Each process is started with a single thread, often called the primary thread, but can create additional threads … Continue reading Difference between process and thread