Classification systems

library classification system

catalogue of folktale types used in folklore studies

Hornbostel–Sachs or Sachs–Hornbostel is a system of musical instrument classification devised by Erich Moritz von Hornbostel and Curt Sachs. This system was first published in the in 1914. An English translation was published in the Galpin Society Journal in 1961, which is the most widely used system for classifying musical instruments by ethnomusicologists and organologists (people who study musical instruments). The system was updated in 2011 as part of the work of the Musical Instrument Museums Online (MIMO) Project.

system of descriptive information for an arrangement or division of objects into groups based on characteristics, which the objects have in common

thumb|Interpretation of the MEMEX at German Museum of Technology thumb|Vannevar Bush

thumb|Drawers of the Mundaneum's Universal Bibliographical System bibliographic index cards The Mundaneum was an institution which aimed to gather together all the world's knowledge and classify it according to a system known as the Universal Decimal Classification. It was developed at the turn of the 20th century by Belgian lawyers Paul Otlet and Henri La Fontaine. The Mundaneum has been identified as a milestone in the history of data collection and management, and, albeit more tenuously, as a precursor to the Internet.

Classification is the activity of assigning objects to some pre-existing classes or categories. This is distinct from the task of establishing the classes themselves (for example through cluster analysis). Examples include diagnostic tests, identifying spam emails and deciding whether to give someone a driving license.

A rating is an evaluation or assessment of something, in terms of a metric (e.g. quality, quantity, a combination of both,...).

set of symbols appearing on plastic products that identify the plastic resin out of which the product is made

scientific classification of meteorites according to their origins and shared properties

English thesaurus, a book listing categories of words grouped by semantics (multiple editions)

universal and formal language imagined by the German polymathic genius, mathematician, scientist and philosopher Gottfried Leibniz able to express mathematical, scientific, and metaphysical concepts

Diairesis (, "division") is a form of classification used in ancient (especially Platonic) logic that serves to systematize concepts and come to definitions. When defining a concept using diairesis, one starts with a broad concept, then divides this into two or more specific sub-concepts, and this procedure is repeated until a definition of the desired concept is reached. Aristotle makes extensive use of diaresis in categorization as basis for syllogizing. He makes clear, however, that definition by diaresis does not in itself prove anything. Apart from this definition, the procedure also resu

Classification system

A typology is a system of classification used to organize things according to similar or dissimilar characteristics. Groups of things within a typology are known as "types".

standards determining vessel sizes on rivers and canals of Europe

system of categorizing fires to determine suitable extinguishing agents

six volume catalogue of motifs in folklore, composed by Stith Thompson

mineral classification scheme

4-digit number which enables credit card companies to monitor and restrict transactions

division into three categories

subject classification system for computing

The PANOSE System is a method for classifying typefaces solely on their visual characteristics, developed by Benjamin Bauermeister. It can be used to identify an unknown font from a sample image or to match a known font to its closest visual neighbor from a font pool. The word "PANOSE" is composed of letters taken from the six classes in which the creator of the system organized the Latin alphabet.

catalog of software weaknesses and vulnerabilities

group of folk and fairy tales about a human woman marrying or being betrothed to an animal

fictional Chinese taxonomy mentioned by Jorge Luis Borges

The Adversarial Tactics, Techniques, and Common Knowledge (ATT&CK) is a guideline for classifying and describing cyberattacks and intrusions. It was created by the Mitre Corporation and released in 2013.

medical classification system