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  2. Oversampling and undersampling in data analysis - Wikipedia

    en.wikipedia.org/wiki/Oversampling_and_under...

    To create a synthetic data point, take the vector between one of those k neighbors, and the current data point. Multiply this vector by a random number x which lies between 0, and 1. Add this to the current data point to create the new, synthetic data point. Many modifications and extensions have been made to the SMOTE method ever since its ...

  3. List of datasets for machine-learning research - Wikipedia

    en.wikipedia.org/wiki/List_of_datasets_for...

    The datasets are classified, based on the licenses, as Open data and Non-Open data. The datasets from various governmental-bodies are presented in List of open government data sites. The datasets are ported on open data portals. They are made available for searching, depositing and accessing through interfaces like Open API. The datasets are ...

  4. SAS language - Wikipedia

    en.wikipedia.org/wiki/SAS_language

    DATA blocks can be used to read and manipulate input data, and create data sets. PROC blocks are used to perform analyses and operations on these data sets, sort data, and output results in the form of descriptive statistics, tables, results, charts and plots. [15] [16] PROC SQL can be used to work with SQL syntax within SAS. [17]

  5. Record linkage - Wikipedia

    en.wikipedia.org/wiki/Record_linkage

    Record linkage is important to social history research since most data sets, such as census records and parish registers were recorded long before the invention of National identification numbers. When old sources are digitized, linking of data sets is a prerequisite for longitudinal study. This process is often further complicated by lack of ...

  6. Data-flow diagram - Wikipedia

    en.wikipedia.org/wiki/Data-flow_diagram

    A special form of data-flow plan is a site-oriented data-flow plan. Data-flow diagrams can be regarded as inverted Petri nets, because places in such networks correspond to the semantics of data memories. Analogously, the semantics of transitions from Petri nets and data flows and functions from data-flow diagrams should be considered equivalent.

  7. SAS (software) - Wikipedia

    en.wikipedia.org/wiki/SAS_(software)

    The DATA step has executable statements that result in the software taking an action, and declarative statements that provide instructions to read a data set or alter the data's appearance. [4] The DATA step has two phases: compilation and execution. In the compilation phase, declarative statements are processed and syntax errors are identified.

  8. Google Dataset Search - Wikipedia

    en.wikipedia.org/wiki/Google_Dataset_Search

    Google Dataset Search is a search engine from Google that helps researchers locate online data that is freely available for use. [1] The company launched the service on September 5, 2018, and stated that the product was targeted at scientists and data journalists. The service was out of beta as of January 23, 2020. [2]

  9. SEMMA - Wikipedia

    en.wikipedia.org/wiki/SEMMA

    The phases of SEMMA and related tasks are the following: [2] Sample.The process starts with data sampling, e.g., selecting the data set for modeling.The data set should be large enough to contain sufficient information to retrieve, yet small enough to be used efficiently.