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In natural science and signal processing, an artifact is any perceived distortion or other data error caused by the instrument of observation. The lunar farside as seen from Apollo 11 Natural science is the rational study of the universe via rules or laws of natural order. ...
Signal processing is the processing, amplification and interpretation of signals, and deals with the analysis and manipulation of signals. ...
A distortion is the alteration of the original shape (or other characteristic) of an object, image, sound, waveform or other form of information or representation. ...
In general, data consist of propositions that reflect reality. ...
For example, a compression artifact in computer science is a noticeable error caused by lossy data compression. In microscopy, artifacts are sometimes introduced during the processing of samples into slide form. A compression artifact (or artefact) is the result of an aggressive data compression scheme applied to an image, audio, or video that discards some data which is determined by an algorithm to be of lesser importance to the overall content but which is nonetheless discernible and objectionable to the user. ...
Computer science, or computing science, is the study of the theoretical foundations of information and computation and their implementation and application in computer systems. ...
A lossy data compression method is one where compressing data and then decompressing it retrieves data that may well be different from the original, but is close enough to be useful in some way. ...
It has been suggested that this article or section be merged into microscope. ...
Microscope slides and cover slips. ...
In econometrics, which trades on computing linear relationships between related variables, an artifact is a spurious finding, such as one based on either a faulty choice of variables or an overextension of the computed relationship. Such an artifact may be called a statistical artifact. For instance, a hypothetical finding that presidential approval rating is approximately equal to twice the percentage of citizens making more than $50,000 annually would predict that the approval rating will be 120% if 60% of citizens make over $50,000. This prediction is a statistical artifact, since it is spurious to use the model when the percentage of citizens making over $50,000 is so high (and silly to predict an approval rating greater than 100%). Econometrics literally means economic measurement. It is a combination of mathematical economics and statistics. ...
In computer science and mathematics, a variable (sometimes called a pronumeral) is a symbol denoting a quantity or symbolic representation. ...
An approval rating is a polling term which reflects the percent of respondants to an opinion poll who approve of a particular person or program. ...
An abstract model (or conceptual model) is a theoretical construct that represents physical, biological or social processes, with a set of variables and a set of logical and quantitative relationships between them. ...
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