A demilitarized zone (DMZ) is a computer network with security-controlled access to the servers connected to it. The systems installed in the DMZ are shielded from other networks (e.g. Internet, LAN) by one or more firewalls. This separation allows access to publicly accessible services (bastion hosts with e.g. e-mail, WWW) and at the same time protects the internal network (LAN) from … [Read more...]
What is a Bastion Host
A bastion host, sometimes also known as a jump server or jump host, is a server that provides services for the public Internet or untrusted networks (for example, large non-segregated intranet environments) or accesses the public Internet as a proxy or mail server and therefore needs special protection against attacks. The Bastion Host role is suitable for servers in exposed areas and should … [Read more...]
What is the Push and Pull Model (Marketing/Sales)?
The two business terms push and pull come from the field of logistics (also the term pull principle is used in lean management) and supply chain management, but can also be found extensively in various sub-areas of marketing. In the field of marketing, this refers to two opposing strategies for selling goods (or service) on a market. Under certain conditions, both strategies can be combined. An … [Read more...]
Legal and Moral Aspects of Data Mining
Data mining is the application of statistical techniques to large data sets. Due to their size, they are processed using computer-supported methods. The terminology is somewhat misleading because it is about extracting knowledge from already existing data and not about generating data itself. Previously, we have pointed out the Different Tasks of Data Mining and Data Mining Issues. This article … [Read more...]
How Decision Support System Works
Decision Support Systems are software systems that identify, process, compile and help evaluate information relevant to human decision-makers for operational and strategic tasks. This includes functions for sorting and filtering data, its flexible presentation as well as evaluation options such as totals or average calculations, comparisons, etc. Further functions allow the execution of model … [Read more...]
Types of Classification Methods
Classification methods, also known as classification procedures, are methods and criteria for classifying objects or situations into classes, i.e. for classification. Such a procedure is also known as a classifier. Many methods can be implemented as algorithms; this is also referred to as machine or automatic classification. Classification methods are always application-oriented, so there are many … [Read more...]
Time Series Analysis: Overview
In statistics, time series analysis deals with the inferential analysis of time series and the prediction of trends for their future development. It is a special form of regression analysis. A time series is a chronologically ordered sequence (but usually not a series in the mathematical sense) of numbers or observations, in which the arrangement of the characteristic characteristics necessarily … [Read more...]
Data Mining Issues
In our earlier discussions, we have clarified the data mining tasks. While most data mining methods try to be able to deal with data that is as general as possible, there are also specializations for more specialized data types. Text mining: Text mining is about the analysis of large textual data sets. This can be used, for example, to detect plagiarism or to classify the text inventory. … [Read more...]
What Are Different Tasks of Data Mining?
As explained in earlier articles, data mining is the systematic application of statistical methods to large data sets (especially "big data") with the aim of creating new Identify cross-connections and trends. Due to their size, such databases are processed using computer-aided methods. In practice, the sub-term data mining has been applied to the entire process of so-called "knowledge discovery … [Read more...]
What is Web Mining
Web mining is the transfer of data mining techniques for the (partially) automatic extraction of information from the Internet, especially the World Wide Web. Web mining adopts procedures and methods from the fields of information retrieval, machine learning, statistics, pattern recognition and data mining. Three objects of investigation can be distinguished: The content (web content mining) … [Read more...]
Recursion in Programming
In mathematics and computer science, recursion is a common term. Recursion is a process that is in principle infinite and contains itself as part or can be defined with the help of itself. Usually, recursive processes can be described relatively briefly or can be triggered by a relatively short statement. In recursion, the successive sub-processes or the objects created one after the other are not … [Read more...]