The Standard Industrial Classification (SIC) was a US classification system used to collect statistical information about business activities from 1937 to 1997. It has been replaced by the North American Industrial Classification System (NAICS), but some organizations still use SIC codes. Each SIC code has four digits and is used to categorize different industries. The […]
Psychiatric diagnosis and treatment have a long history, with classification systems used to diagnose and treat patients. The American Psychiatric Association and World Health Organization categorize mental health problems, with the DSM and ICD being the most well-known systems. However, there is debate about the efficiency and potential harm of psychiatric classifications. The diagnosis and […]
Data classification is the analysis and categorization of an organization’s data assets to determine appropriate access, storage, and retention. It helps understand security, legal and compliance requirements, business importance, availability needs, and current location. It benefits an organization by meeting legal and compliance requirements, reducing backup and archiving costs, and providing more effective use of […]
Document classification helps organizations find important information. Supervised and unsupervised methods are used to categorize documents, with rule-based classification giving the user maximum control. Semi-supervised classification combines manual and automated methods. Different algorithms are used for hierarchical organization of documents. Just as a web browser must organize data so that users can get search results, […]
Fingerprint classification categorizes fingerprints into groups for easier matching. Friction ridges on fingers are unique, and researchers have identified several broad classes based on their shapes. Fingerprint classification allows for further categorization, and numerical codes can help quickly find similar fingerprints. While computer systems are used for matching, manual comparison is still important for investigators. […]
Data mining classification is a process of grouping items based on key characteristics. Techniques include nearest neighbor classification, decision tree learning, and support vector machines. Other methods include clustering, regression, and rule learning. Algorithms like Bayes’ naive classification and neural networks are used for probability and mimicking human brain, respectively. Support vector machines use a […]
Statistical classification divides data into categories for analysis using formulas. Standardized systems exist for common data types. Researchers can assign data to categories and develop formulas to classify it. Quantitative data is necessary for analysis. Statisticians use various techniques and must consider the dataset and its use. Researchers must discuss their classification system and provide […]
Soil classification assigns a grade or name to soil types for specific applications. Different systems exist for engineering, agriculture, and geology. The Unified Soil Classification System (USCS) combines engineering and geological classifications. The USDA has its own system with over 20,000 soil types. The AASHO has a chart for building roads, while the FAO has […]
Doctors use four groups of fracture classifications to describe a broken bone, including open or closed, location, type of break, and completeness. The location is defined by the bone’s proximity to the body, and the type of break can be transverse, spiral, oblique, comminuted, or segmental. An incomplete fracture means the bone is not completely […]
Tumors are abnormal growths caused by uncontrolled cell division. They are classified as benign or malignant, with malignant tumors being cancerous and able to spread. There are various classification systems, with rating scales describing the aggressiveness of the tumor. Different types of cancer have different classification systems, such as brain tumors being classified by the […]
Bacteria are classified based on shared characteristics such as RNA sequences, shape, biochemistry, and outer membrane. They are divided into three domains and exhibit extreme diversity. Classification can be difficult due to the absence of complex structures and DNA transfer. Techniques such as shape, size, Gram stain test, metabolism, and molecular analysis are used for […]
Scientific classification, also known as Linnaeus classification, is a hierarchical system used by biologists to classify all life on Earth. It has eight levels of categorization, with the current top-level system being three domains: Bacteria, Archaea, and Eukarya. The higher levels of scientific classification have changed several times over the years, with the most recent […]
