"Backshift" redirects here. For the linguistic sense, see Sequence of tenses.
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In time series analysis, the lag operator (L) or backshift operator (B) operates on an element of a time series to produce the previous element. For example, given some time series
then
for all
or similarly in terms of the backshift operator B: for all . Equivalently, this definition can be represented as
for all
The lag operator (as well as backshift operator) can be raised to arbitrary integer powers so that
In time series analysis, the lagoperator (L) or backshift operator (B) operates on an element of a time series to produce the previous element. For example...
time series analysis, the shift operator is called the lagoperator. Shift operators are examples of linear operators, important for their simplicity...
(1-L)^{d}X_{t}\ } is a stationary process, where L {\displaystyle L} is the lagoperator and 1 − L {\displaystyle 1-L} is the first difference, i.e. ( 1 − L )...
in the backshift operator applied to ε t {\displaystyle \varepsilon _{t}} has an infinite order—that is, an infinite number of lagged values of ε t {\displaystyle...
_{i}L^{i}\right)\varepsilon _{t}\,} where L {\displaystyle L} is the lagoperator, the α i {\displaystyle \alpha _{i}} are the parameters of the autoregressive...
(1-\lambda _{1}L)(1-\lambda _{2}L)y_{t}=\varepsilon _{t}} where L is a lagoperator that decreases the time index of a variable by one period: L y t = y...
L-moment Labour Force Survey Lack-of-fit sum of squares Lady tasting tea LagoperatorLag windowing Lambda distribution – disambiguation Landau distribution...
A Lagged Fibonacci generator (LFG or sometimes LFib) is an example of a pseudorandom number generator. This class of random number generator is aimed at...
_{XX}(\tau ),} where τ = t 2 − t 1 {\displaystyle \tau =t_{2}-t_{1}} is the lag time, or the amount of time by which the signal has been shifted. The autocovariance...
initial DALnet people were "ops in #StarTrek sick from the constant splits/lags/takeovers/etc". DALnet quickly offered global WallOps (IRCop messages that...
angle between the polarizer settings and decreased exponentially with time lag between emitted photons. Kocher's apparatus, equipped with better polarizers...
similarity between observations of a random variable as a function of the time lag between them. The analysis of autocorrelation is a mathematical tool for...
tool used to apply a specific torque to a fastener such as a nut, bolt, or lag screw. It is usually in the form of a socket wrench with an indicating scale...
2013-11-29. Trafi: Internationellt behörighetsbrev för förare av fritidsbåt Lag om fartygspersonal och säkerhetsorganisation för fartyg (29.12.2009/1687)...
operators, which also constitute models of receptive fields of non-lagged vs. lagged neurons in the LGN: ∂ t , n o r m ( ∇ ( x , y ) , n o r m 2 L ) =...
time-lag τ elapsing between the values of f to be correlated. For most functions f that occur in practice, R is a bounded even function of the time-lag τ...
as Master Chief Special Warfare Operator[note A] Jason Hayes a.k.a. Bravo 1/1B Max Thieriot as Special Warfare Operator Second Class Clay Spenser a.k.a...
implies high round trip times from satellite to earth leading to a noticeable lag being present during voice calls. Voice communications with satellite phones...
, x j + h ) {\displaystyle C(x_{i},x_{j})=C(x_{i}+h,x_{j}+h)\,} for any lag h, the covariance function can be represented by a one-parameter function...
sector, the labor market, etc.) in which some agents' actions depend on lagged variables. The model would then be solved for current values of key variables...
Indian mobile network operator with its headquarters based in Mumbai and Gandhinagar. It is an all-India integrated GSM operator offering 2G, 3G, 4G, LTE...
since been written off." Airbus Considers Ditching A380 in 2018 as Buyers Lag on YouTube (Bloomberg, posted to YouTube on 11 December 2014) Quote: ".....
serving Lages, Brazil. It is operated by Infracea. No scheduled flights operate at this airport. The airport is located 6 km (4 mi) from downtown Lages. Aviation...
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