- published: 17 Apr 2016
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Catharsis or katharsis (Greek: κάθαρσις) is a Greek word meaning "cleansing" or "purging". It is derived from the verb καθαίρειν, kathairein, "to purify, purge," and it is related to the adjective καθαρός, katharos, "pure or clean."
Catharsis is a term in dramatic art that describes the "emotional cleansing" sometimes depicted in a play as occurring for one or more of its characters, as well as the same phenomenon as (an intended) part of the audience’s experience. It describes an extreme change in emotion, occurring as the result of experiencing strong feelings (such as sorrow, fear, pity, or even laughter). It has been described as a "purification" or a "purging" of such emotions. More recently, such terms as restoration, renewal, and revitalization have been used when referencing the effect on members of the audience.[citation needed]
The Greek philosopher Aristotle was the first to use the term catharsis with reference to the emotions – in his work Poetics. In that context, it refers to a sensation or literary effect that, ideally, would either be experienced by the characters in a play, or be wrought upon the audience at the conclusion of a tragedy; namely, the release of pent-up emotion or energy.
Data ( /ˈdeɪtə/ DAY-tə, /ˈdætə/ DA-tə, or /ˈdɑːtə/ DAH-tə) are values of qualitative or quantitative variables, belonging to a set of items. Data in computing (or data processing) are often represented by a combination of items organized in rows and multiple variables organized in columns. Data are typically the results of measurements and can be visualised using graphs or images. Data as an abstract concept can be viewed as the lowest level of abstraction from which information and then knowledge are derived. Raw data, i.e., unprocessed data, refers to a collection of numbers, characters and is a relative term; data processing commonly occurs by stages, and the "processed data" from one stage may be considered the "raw data" of the next. Field data refers to raw data collected in an uncontrolled in situ environment. Experimental data refers to data generated within the context of a scientific investigation by observation and recording.
The word data is the plural of datum, neuter past participle of the Latin dare, "to give", hence "something given". In discussions of problems in geometry, mathematics, engineering, and so on, the terms givens and data are used interchangeably. Such usage is the origin of data as a concept in computer science or data processing: data are numbers, words, images, etc., accepted as they stand.