Temporal data: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 4: | Line 4: | ||
{{Quotation|Temporal data is data that varies over time.|[Jensen and Snodgrass, 1999]}} | {{Quotation|Temporal data is data that varies over time.|[Jensen and Snodgrass, 1999]}} | ||
{{Quotation|A temporal data denotes the evolution of an object characteristic over a period of time.|[Daassi and Nigay, 2004]}} | {{Quotation|A temporal data denotes the evolution of an object characteristic over a period of time.|[Daassi and Nigay, 2004]}} | ||
{{Quotation| | {{Quotation|Time dependent data is characterized by data elements being a function of time. In general, data takes the form | ||
:d = f(t) | |||
Time dependent data is characterized by data elements being a function of time. In general, data takes the form | |||
:d | |||
For data defined at discrete time stamps t<sub>i</sub>, this relation can be represented as: | For data defined at discrete time stamps t<sub>i</sub>, this relation can be represented as: | ||
:D | :D = {(t<sub>1</sub>, d<sub>1</sub>),( t<sub>2</sub>, d<sub>2</sub>), ..., (t<sub>n</sub>, d<sub>n</sub>)} | ||
:where | :where | ||
:d<sub>i</sub> | :d<sub>i</sub> = f(t<sub>i</sub>)|[Müller and Schumann, 2003]}} | ||
== Remarks == | == Remarks == | ||
Revision as of 02:34, 2 June 2005
Temporal data refers to a series of data originating in one concept (stochastic variable) yet varying over time and ordered accordingly.
Definitions
Temporal data is data that varies over time.
[Jensen and Snodgrass, 1999]
A temporal data denotes the evolution of an object characteristic over a period of time.
[Daassi and Nigay, 2004]
Time dependent data is characterized by data elements being a function of time. In general, data takes the form
- d = f(t)
For data defined at discrete time stamps ti, this relation can be represented as:
- D = {(t1, d1),( t2, d2), ..., (tn, dn)}
- where
- di = f(ti)
[Müller and Schumann, 2003]
Remarks
Applying exploratory (esp. timelines) as well as confirmatory methods, temporal data can be used to analyze the influence of time on a certain variable.
Synonyms
- temporal data
- time-oriented data
- time-varying data
- time-dependent data
References
- [Daassi and Nigay, 2004]: Daassi, Chaouki and Nigay, Laurence and Fauvet, Marie-Christine, Visualization Process of Temporal Data, Lecture Notes in Computer Science, 3180, Springer-Verlag Heidelberg, 2004.
- [Jensen and Snodgrass, 1999]: Jensen, Christian S. and Snodgrass, Richard T., Temporal Data Management, IEEE Transactions on Knowledge and Data Engineering, 11:36-44, 1999.