Table 2

Indicator data types, connotations and characteristics

Division standardData typesConnotationFeatures
Measurement scaleCategorical dataAccording to the classification or grouping of certain attributes of objective phenomena, data reflecting the type of thingsThere is a juxtaposed relationship between each category, and there is no need to distinguish the pros and cons or the size, and the order can be changed arbitrarily; for example, according to the nature of the economy, enterprises are divided into state-owned, collective, private and other economies
Sequential dataNon-numeric data measured for the level difference or order difference between objective objectsThe categories are ordered and can be represented by numerical codes; for example, the test scores can be divided into excellent, good, medium, pass and fail
Numeric dataThe observed value of the objective object measured according to the digital scale, which is expressed as a specific valueIndicates the quantitative characteristics of the objective object; for example, income 1000 yuan, age 20 years, weight 50 kg, etc.
The relationship between objective subject and timeSection dataObservation data of the same indicator of multiple objective objects at the same time pointObtained in different spaces to describe the changes of objective objects at a certain moment
Time series dataObservation data of an indicator of an objective object at different time pointsAcquired in chronological order, describing how an objective phenomenon changes over time
Panel dataSample data composed of multiple cross-sectional sample observations on a time seriesAlso called “parallel data” or Panel Data, it is an m*n data matrix, which records a certain indicator data of m objects on n time nodes
Collection methodStatistical dataData on the characteristics, scale, structure, level and other indicators of natural elements in a certain areaUsing a certain measurement scale to measure the results of things, different measurement scales get different types of statistical data
Survey dataIndicator data collected through surveys or observations without external interferenceStatistical indicator data about socio-economic phenomena are basically survey observation data
Experimental dataMetric data collected from control subjectsMuch of the data in the natural sciences come from experimental data
Data structureStructured dataData with rigorous logical and physical structure stored in the databaseIt is expressed as a two-dimensional structure, the data is in row units, and the attributes of each row of data are the same
Semi-structured dataData with multiple types of textual, irregular, incomplete or implicit structuresEntities belonging to the same class can have different properties; for example, storing employee resumes
Unstructured dataIt can only be stored in the form of various types of files, and the structure is not fixedGenerally stored in binary data format; for example, various documents, pictures, videos, etc.

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