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In time series data, seasonality refers to the trends that occur at specific regular intervals less than a year, such as weekly, monthly, or quarterly. Seasonality may be caused by various factors, such as weather, vacation, and holidays [1] and consists of periodic, repetitive, and generally regular and predictable patterns in the levels [2] of a time series.
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 ...
A stardate is a fictional system of time measurement developed for the television and film series Star Trek. In the series, use of this date system is commonly heard at the beginning of a voice-over log entry, such as "Captain's log, stardate 41153.7. Our destination is planet Deneb IV …". While the original method was inspired by the ...
Give dates and times appropriate to the time zone where an event took place. For example, the date of the attack on Pearl Harbor should be December 7, 1941 (Hawaii time/ date). Give priority to the place at which the event had its most significant effects; for example, if a hacker in Monaco attacked a Pentagon computer in the US, use the time ...
A seasonal pattern exists when a time series is influenced by seasonal factors. Seasonality occurs over a fixed and known period (e.g., the quarter of the year, the month, or day of the week). [1], the irregular component (or "noise") at time t, which describes random, irregular influences. It represents the residuals or remainder of the time ...
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 ...
In traditional American usage, dates are written in the month–day–year order (e.g. August 18, 2024) with a comma before and after the year if it is not at the end of a sentence [ 2] and time in 12-hour notation (12:22 am). International date and time formats typically follow the ISO 8601 format (2024-08-18) for all-numeric dates, [ 3] write ...
ISO 8601 is an international standard covering the worldwide exchange and communication of date and time -related data. It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. [ 1] The standard provides a well-defined ...