Visualization of all countries around the world

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Corona is a family of viruses that consists of several members, historically been exposed to a variety of respiratory illnesses, including the common cold, severe acute respiratory illness, SARS, and MERS. The current outbreak of covid disease is a new member of this family that has not been seen in humans before. The virus is called the new corona 2019 or nCOV-2019 and causes COVID-19. These days, the covid-19 vaccine has become a lifeline for the people of the world. With the spread of the Coronavirus, we have seen many efforts by different countries to produce a vaccine for this…


The great Persian mathematicians

Without any doubt, the algorithm has a unique role in data science and machine learning. Basically, problem-solving with machine programming or automation does not usually start with writing a program. Before writing a program, it is necessary to define step by step what the program should do. This step-by-step definition of an operation is called Algorithm. The algorithm is originally from the name of the great Persian mathematician, Khwarizmi. Khwarizmi means, was born in “Khwarizm” or “Khwarazm” city. This city was the center of the Persian(Iranian) Khwarazmian civilization, and a series of kingdoms such as the Khwarazmian dynasty and the…


How to be smarter among others

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Startup is one of the most common terms in the business world. It must have happened that one day you got tired of being an employee or doing routine tasks. If you have ever thought about starting your own business, you have probably heard the term many times. Startups are projects in which a raw idea is created to help teamwork to produce a product and there is a basis for selling that product. In fact, the startup goes all the way from zero to one hundred and does all the steps in the form of trial and error or…


Cassandra Query Language

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Big data is rapidly developing and has been used in various fields of science and has come up with new concepts and programs that need their own architecture to implement. One of the most important parts of this architecture is the database that can manage the required data. Unlike the regular databases, in this architecture, the database has no functional relationship, and since the data used in the big data is not necessarily structured, we need another type of database called NoSQL, and Apache Cassandra has one of the most appropriate fundamentals in NoSQL architecture.

The Cassandra database, a distributed…


Four levels of measurement

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The variable is a feature that is measured from people or objects in the statistical community and varies from member to member and usually represented by letters. After measuring the values of variables in the statistical population, if the statistical data from the population is qualitative, we use attribute or feature is instead of the variable. Quantitative values are obtained by counting or measuring with measuring instruments. This type of data is represented by numbers. Such as length, ‌ weight, pressure, temperature. Since these types of data are numerical, it is possible to perform mathematical calculations on them. Therefore, the…


Both are important in the data science ecosystem

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Qualitative data is also called stratified data because it can be categorized by category. For example, suppose a student reads a paragraph from a book in one of the class sessions. The teacher who listens to the reading gives feedback on how the child reads that paragraph. This is considered as an example of qualitative data if the teacher gives feedback based on fluency, tone of voice, pronunciation, clarity of pronunciation without giving the child a grade. It is very easy to understand the difference between quantitative and qualitative data. Qualitative data in defining attributes does not include numbers, while…


Which one is more popular?

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When you work with databases such as Excel or SQL Server. These databases usually try to make the data comprehensible to the computer. In fact, structured data that we have in Excel or relational databases such as SQL Server is data that can be performed on various operations with known computer algorithms. This is how we say the data is understood by the machine. But data such as daily news in text form, or data in movies and videos shared on social media, is different from the previous type. Due to their diversity, they are not able to be structured…


The most important foundation

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Data is actually a form of raw and intact information that is intended for various uses. This type of information may not be so tangled that it is incomprehensible until it is sorted. When a researcher starts collecting raw data for his or her research project, he or she does so using a tool called a questionnaire. Usually, questionnaires or survey forms have options such as A, B, C, D, etc. for themselves. Suppose this researcher wants to get the results of the questionnaire he has prepared. In the first place, by looking at a number of A, B, C…


The hidden treasure everywhere

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Data are facts that can be obtained through observation and research. Raw materials that have not yet been processed, such as the date and amount of an invoice, the number of employees in the company, and the details of the payroll. In a simpler example; Your date of birth is initially a piece of data against your age that becomes information for use after processing and announcing your age. We live in an information economy right now. Despite the fact that most organizations acknowledge this, they can not have a proper translation of it for their business and answer the…


Deep dive into natural selection method

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The first concept that programmers or application developers grapple with is the concept of algorithm. When a user or programmer is looking for a solution to a problem, he or she specifies a strategy or set of instructions needed to solve the problem, called an algorithm. One of the most cost-effective and simplest problem-solving techniques, in terms of computational load and time required to implement the algorithm, in the field of artificial intelligence is evolutionary computational methods. In general, evolutionary computational algorithms are based on the use of Darwin’s theory of evolution to implement computer programs. In the field of…

Saman Siadati

Data Science and Machine Learning Researcher https://www.credly.com/users/saman-siadati/badges

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