data science

The following is a possible content of a big data science powerpoint: ** 1. The Concept of Big Data ** Big Data refers to a massive and complex collection of data that cannot be extracted, stored, searched, shared, analyzed, and processed with existing software tools. Simply put, it is data that is difficult to manage with existing general technology. ** 2. The difference between big data and traditional data ** 1. ** Problem Focus ** - Traditional data focused more on issues such as performance and business indicators. For example, if Xiao Ming went to the bookstore 100 times, traditional data focused on whether he bought a book for the 101st time. - Big data was more concerned with the accurate description of individuals. For example, what books Xiao Ming might buy for the 101st time and what content he needed to recommend. 2. ** Groups and individuals ** - The traditional definition was to pay more attention to a group of people and use the same rules to formulate a set meal for them. - The big data of the Internet era had to accurately portray everyone and match them accurately. ** 3. The typical characteristics of big data (3V)** 1. **Volume ** - Now, it basically referred to the order of magnitude from tens of Terabytes to a few petabytes. In the future, only a few exabytes of data could be called big data. 2. ** Variant ** - This includes both structured and structured data. 3. ** Speed ** - It emphasized the frequency of data generation and update. ** 4. Big Data in a broad sense ** 1. This included data that was difficult to manage due to its 3V characteristics. 2. The technology to store, process, and analyze this data. 3. Talents and organizations that could analyze these data to gain practical meaning and perspectives. ** 5. Big Data Usage Case ** 1. ** U.S. population survey ** - In 1880, it took eight years to complete the data compilation of the U.S. population. In 1890, it was estimated that it would take 13 years to compile the data. However, after using the punched card tabulation machine invented by Herman Holreis, the 1890 population survey only took one year. 2. ** Deflation Projection ** - The Bureau of Labor statistics published the consumer price index (CPI) every month to test the rate of inflation. Collecting price information manually cost 250 million dollars a year and the data was lagging by a few weeks. And two economics researchers at the MIT Institute of Technology used software to collect the prices of 500,000 commodities on the Internet every day, and they could detect the trend of deflation ahead of official data. 3. ** Wal-Mart's display of goods ** - By observing the huge database of historical transaction records, Walmart found that whenever the sales of flashlights increased before the seasonal hurricane, the sales of American breakfast snacks and egg tarts also increased. Therefore, whenever a seasonal hurricane came, Wal-Mart would put the egg tarts together with hurricane supplies to increase sales. "A Short History of the Future: Legends of the Intelligent Era" was equally exciting. Everyone was welcome to click and read it!

Data science and big data technology were undergraduate majors in ordinary colleges and universities in China. They were computer science majors and were awarded a bachelor's degree in science for four years. This major mainly studied computer science and big data processing technology and other related knowledge and skills. It analyzed and solved practical problems from three main levels: data management, system development, and massive data analysis and mining. The courses covered mathematics (such as calculus, linear algebra, probability theory and mathematical statistics, discrete-time mathematics, etc.), basic knowledge of computer science (such as SQL, relative-type database management system, computer introduction, programming foundation, etc.), core courses (such as computer composition principles, operating systems, machine learning, data mining, big data technology framework, etc.), and other related courses (such as data visualization, distributed systems, cloud computing, natural language processing, etc.). For students of this major, if they want to find a job, they can work in IT enterprises in big data technology, big data research, data management, data mining, algorithm engineering, application development and other related positions. They can also take the soft exam, CDA data analyst and other highly recognized certificates in the industry. During the undergraduate period, they can use the holiday internship to accumulate experience; If you want to take a postgraduate entrance examination, you should aim at the professional course books of the target university, participate in more competitions to improve your practical ability, strive to enter the laboratory and publish papers; If he wanted to get a postgraduate degree, he had to actively participate in scientific research and strive to publish a thesis. Learning this major was quite difficult because it involved mathematics, statistics, computer science, and many other aspects of knowledge. There were certain requirements for the foundation of mathematics. Students with poor mathematics foundation should be careful when applying. In 2024, a total of 705 colleges and universities across the country offered this major. Different colleges and universities had differences in the curriculum design and enrollment scores of this major. For example, among the colleges and universities in Zhejiang, the highest score was 671 points for the University of Fujian, and the lowest score was 492 points for the Xi'an Institute of Translation. "A Short History of the Future: Legends of the Intelligent Era" was equally exciting. Everyone was welcome to click and read it!

They often combine technical knowledge with a narrative. For example, they might tell a story about a data scientist solving a complex problem, while explaining the algorithms and data handling techniques used.

One top data science story could be about how data science is revolutionizing healthcare. For example, data scientists are using patient data to predict disease outbreaks and develop personalized treatment plans. Another might be its role in finance, where it's used for fraud detection and risk assessment. And in the field of marketing, data science enables companies to target customers more effectively through data - driven insights.

It varies. Sometimes women are shown as competent and leading in the field, but other times they might be underrepresented or stereotyped.