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k-means clustering is a method of vector quantization, originally from signal processing, that aims to partition n observations into k clusters in which each observation belongs to the cluster with the nearest mean (cluster centers or cluster centroid), serving as a prototype of the cluster. This results in a partitioning of the data space ...

K'osŭp'i chisu. The Korea Composite Stock Price Index or KOSPI (코스피지수) is the index of all common stocks traded on the Stock Market Division—previously, Korea Stock Exchange—of the Korea Exchange. It is the representative stock market index of South Korea, like the S&P 500 in the United States. KOSPI was introduced in 1983 with ...

The zero lag exponential moving average (ZLEMA) indicator was created by John Ehlers and Ric Way. As is the case with the double exponential moving average (DEMA) and the triple exponential moving average (TEMA) and as indicated by the name, the aim is to eliminate the inherent lag associated to all trend following indicators which average a price over time.

The Exponential family is a broad family of models for covering many types of data, not just networks. An ERGM is a model from this family which describes networks. Formally a random graph consists of a set of nodes and dyads (edges) where if the nodes are connected and otherwise. The basic assumption of these models is that the structure in an ...

The Kardashian Index (K-Index), named after Kim Kardashian, is a satirical measure of the discrepancy between a scientist's social media profile and publication record. [1] [2] Proposed by Neil Hall in 2014, the measure compares the number of followers a research scientist has on Twitter to the number of citations they have for their peer-reviewed work.