# Variable

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## Variable

An element in a model. For example, in the model RS&Pt+1 = a + b Tbill t + et, where RS&Pt+1 is the return on the S&P in month t+1 and Tbill is the Tbill return at month t, both RS&P and Tbill are "variables" because they change through time; i.e., they are not constant.

## Variable

Anything that does not have a set value. In basic algebra, a variable is often expressed as "x." Variables in economics and finance may be measures such as GDP, prices, or interest rates. Analysts use complicated equations to determine the value of some variables at the present time and even more complicated equations to predict their possible future values. See also: Regression.

## variable

Something, such as stock prices, earnings, dividend payments, interest rates, and gross domestic product, that has no fixed quantitative value. See also dependent variable, independent variable.
References in periodicals archive ?
Next, the MapReduce framework is used to optimize the threshold and extract the edge features of the image in a parallel manner using key-value pairs such as <image name, image file>.
MapReduce transforms splits into key-value pairs (<key1, value1>) using the recordReader method of SequenceFileInputFormat, in which key1 is the path name of the image and valuel is a pointer to the image data.
Second, we divide the simplified attack graph into key-value pairs and then calculate the probability of the key-value pairs.
Motivated by the limitations in existing solutions, we use the partition tuning method to disperse key-value pairs in virtual partitions and recombine each virtual partition in case of data skew.
A representation of Johannesburg as a series of key-value pairs. Johannesburg Instance city Country South Africa Coordinates 26[degrees]8'42"S, 2803'1"E Inception 1886
As each generated q-gram signature forms an output key-value pair (the size for the pair is 1), the communication cost for Shuffle is O([[bar.[absolute value of V]].sup.q] * ([absolute value of R] + [absolute value of S])).
In the key-value pairs transmitted between mappers and reducers, the key is an ordered pair of genes ([g.sub.x], [g.sub.y]) and the value is influence ([g.sub.x], [g.sub.y]).
We have used only those views that had a minimum number of two key-value pairs. The resultant reference corpus consisted of 1142 named views, with 8733 key-value pairs.
For signature matching, the key-value pairs in HTTP header are considered as app's signatures and an initial set of seeding app signatures is set up to bootstrap the learning of new ones.
We have first evaluated the execution times obtained by applying the radix sort algorithmic function on key-value pairs of various sizes (35-60,000,000) and float type elements.
A few years ago, many database professionals began experimenting with Not Only SQL (NoSQL) databases, which take structured data out of the equation and rely on queries that are straight key-value pairs. NoSQL databases also have another advantage, as they can be readily run on commodity hardware.
All those key-value pairs are inserted into the hash table, whose structures are depicted in Figure 5.

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