The phrase "already existing data" is correct and usable in written English.
You can use it when referring to data that has been collected or created prior to the current context or analysis.
Example: "In our research, we will analyze the already existing data to identify trends and patterns."
Alternatives: "previously collected data" or "existing data".
This shows how we can better exploit already existing data with new techniques.
The possibility to reuse already existing data sets is one of the key features of the proposed excitation signal optimization.
"Big Data is using already existing data to make judgments".
The main characteristics of a mashup are combination, visualization, and aggregation of an already existing data produced by others.
Franrob: In the next few years will the focus of e-commerce expansion be on the integration of already existing data or the generation of it?
These observations are done either by looking forward and gathering new data (prospective), or by collecting already existing data (retrospective studies) (Sutherland 2001).
We already know from existing data available in five states that homeless students have rates of graduation in the 50 and 60 percentiles, the lowest rates for any student subgroup in the nation.
Most of these entries were individual samples that duplicated samples, which were already combined into existing data sets.
A grade of A was given to indicators of highest relevance and match to the ENAP focus and a score of 1 was given to indicators with a common and consistent definition already measured in existing data sources.
The so-called "digital data deluge" is a phenomena caused not only by the ease with which these large quantities of new data can be created but also by the output of re-analysis of already existing archived data [e-IRG Report on Data management ESFRI (2009)].
For data import, the files are checked for data consistency according to the guidelines and compared with the already existing mutein data to prevent duplicate entries.
