Message-ID: <1832085328.4163.1495592187570.JavaMail.confluence@ece-vmapps> Subject: Exported From Confluence MIME-Version: 1.0 Content-Type: multipart/related; boundary="----=_Part_4162_188446658.1495592187570" ------=_Part_4162_188446658.1495592187570 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Content-Location: file:///C:/exported.html Issue 24: Different data sets

Issue 24: Different data sets

If I want to document that a data set was collected through a su= rvey, how do I do it? Mode? Instrument? Instrument Implementation? Acquisit= ion Activity? Data Channel? Channel Activity Specification?

The question arises because I am trying to distinguish between different= types of microdata: event-history, timeseries, snapshot, survey, register = in order to be able point the Data Consumer to more information.

GSIM v1.0 Annex C Definitions


A set of characteristics that d= escribe the technique (the "how") used for the data acquisition t= hrough a given Data Channel based on a specific Instrument Implementation.<= /p>

While the Data Channel describe= s the means used for data acquisition, the Instrument describes the "w= hat" (i.e. the content, for example, in terms of questions in a questi= onnaire or a list of agreed time series codes in a data exchange template) = and an Instrument Implementation describes the tool used to apply the Instr= ument; the Mode describes "how" the Data Channel is going to be u= sed. The Mode is relevant for all types of Data Channels, Instrument Implem= entations and Instruments and can change over time. The list of Modes will = potentially grow in the future and vary from organization to organization.<= /p>


A tool conceived to record the information th= at will be obtained from the Observation Units.

The Instrument describes the tool used to col= lect data. It could be a traditional survey, a set of requirements for= a software collection program, a clinical procedure, etc. Instrument is de= scribed from the perspective of the statistical organization collecting&nbs= p;the data. It includes the special type of Instrument used for the explici= t purpose of gathering data through a questionnaire (Survey Instrument). Th= e behavior and characteristics of a concrete Instrument is determined = by an Instrument Implementation. Several implementations can be based = in the same Instrument giving the possibility of using multiple channels an= d to apply different collection techniques (Modes) to gather data. An examp= le of this is when a printed format to collect information for a survey is = substituted by a software program; in both cases the Instrument will collec= t the data from the Unit but the behavior of the Instrument will be di= fferent accordingly with its implementation.

Instrument Implementation

A concrete and usable tool for gathering info= rmation based on the rendering of the description made by an Instrument.

This represents an implementation of an Instr= ument. It describes the way in which an Instrument has been translated from= a design to a concrete tool. It could represent a printed form, a software= program made following a specific technological paradigm (web service, web= scraping robot, etc.), the software used by a specialized device to collec= t data, etc. When it describes a Survey Instrument, it can contain descript= ions of how each construct (e.g. Questions, Value Domains, validation Rules= contained in the Instrument) is implemented.

Acquisition Activity

The set of executed processes and the actual = resources required as inputs and produced as outputs to acquire data about = a given Population for a particular reference period. It includes the proce= ss and resource required to acquire data in a Statistical Program consistin= g of gathering data via one or more Data Channels in order to create or fee= d one or more Data Resources.

This object holds Statistical Activity inform= ation that relates specifically to data collection or acquisition. It inher= its the relationships and attributes from the Statistical Activity type.

Data Channel A means of exchanging data.

A Data Channel is an abstract object that des= cribes the means for communicating with Data Resource(s). The Data Channel = identifies the Instrument Implementation, Mode, and Data Resource that= are to be used in a process. In some cases the Data Channel that is used b= y the Data Provider to send its responses could be different that the one u= sed by the statistical office or organization to request information; the s= tatistical office may put electronic formats that can be downloaded by the = Data Provider and once answered returned by traditional mail. Two specializ= ed objects are used to implement this abstract object: Channel Design = Specification used at design time and Channel Activity Specification u= sed at run time.

Channel Activity Specification

A structured, well-defined specification for = a proposed change. The description of the Data Channel made at run time.

This object is a specialization of a Data Cha= nnel and is used to describe the behaviour of a Data Channel at execution t= ime.