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You may receive the message "We have found a virus on your attachment...Send your email again...ML0021" because the AOL email virus scan detected a virus on the file you’re attempting to send as an attachment. Once a file has been rejected by the AOL email service as containing a virus, it can’t be sent even if the virus is cleaned by a ...
In mathematics, a time series is a series of data points indexed (or listed or graphed) in time order. Most commonly, a time series is a sequence taken at successive equally spaced points in time. Thus it is a sequence of discrete-time data. Examples of time series are heights of ocean tides, counts of sunspots, and the daily closing value of ...
Failure rate. Failure rate is the frequency with which an engineered system or component fails, expressed in failures per unit of time. It is usually denoted by the Greek letter λ (lambda) and is often used in reliability engineering . The failure rate of a system usually depends on time, with the rate varying over the life cycle of the system.
A time series database is a software system that is optimized for storing and serving time series through associated pairs of time (s) and value (s). [ 1] In some fields, time series may be called profiles, curves, traces or trends. [ 2] Several early time series databases are associated with industrial applications which could efficiently ...
All told, the outage may have cost Fortune 500 companies as much as $5.4 billion in revenues and gross profit, Parametrix said, not counting any secondary losses that may be attributed to lost ...
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In statistics and econometrics, and in particular in time series analysis, an autoregressive integrated moving average ( ARIMA) model is a generalization of an autoregressive moving average (ARMA) model. To better comprehend the data or to forecast upcoming series points, both of these models are fitted to time series data.
Unevenly spaced time series. In statistics, signal processing, and econometrics, an unevenly (or unequally or irregularly) spaced time series is a sequence of observation time and value pairs (t n, X n) in which the spacing of observation times is not constant. Unevenly spaced time series naturally occur in many industrial and scientific ...