Data Dictionary


Name Description Type
User the person or organization that is involved in a crowdsourcing activity concept
Requester the initiator of a crowdsourcing project (any individual, company, or public organization) concept
Participant the person that submits a contribution concept
Project a carefully planned crowdsourcing activity that includes one or more tasks concept
Task the smallest indivisible unit of work that is clearly described by a single instruction concept
Target Audience an initial general restriction of the size of the crowd (internal, external, both) concept
Action Type the type of action that is required to solve a crowdsourcing task concept
Aggregation Type the mechanism of how the contributions of the crowd are combined concept
Latency Type the time when the solution of a crowdsourcing task can be expected (immediate, untimed) concept
External Resource all additional inputs that are required to accomplish a crowdsourcing task (e.g., applications, documents, or datasets) concept
Contribution all data records, content items, documents, or code fragments that are part of the solution of a crowdsourcing task concept
Requirement any human or technical aspect that is required to solve a crowdsourcing task concept
Human Requirement any aspect that supports the composition of the crowd (demographic characteristics, qualification, etc.) concept
Technical Requirement any aspect that specifies the required system of a crowd member concept
Reward Mechanism the configuration of a certain type of a reward mechanism concept
Reward Nature the definition of how a worker’s contribution is rewarded (fixed, performance-based, proportional, voluntary) concept
Reward Type the specification of what kind of reward is offered (coupon, discount, good, lottery, money, no reward, resource access, virtual points) concept
Payout Method the specification of which participants are rewarded (all, the winner only, or the top ten participants) concept
Evaluation Mechanism the configuration that contains aspects of how a crowdsourcing user or contribution is evaluated concept
Evaluation Time the point of time when the participants or the contributions are evaluated (after, before, simultaneously) concept
Evaluation Source the agent that is engaged in the evaluation process (requester, participant, third party organization, algorithm) concept
Evaluation Method the method that is used for the evaluation (majority decision, control group) concept
Evaluation Specificity the specificity of the evaluation (an acceptance or rejection, a rating, an assessment form, or a free text response) concept
Evaluation Subject the subject of the evaluation (contribution, participant) concept
title a short phrase to describe the instance attribute
description one or more sentences to describe the instance attribute
goal the desired result of a crowdsourcing activity attribute
category the class of a crowdsourcing activity (e.g., idea generation, problem-solving, or content creation) attribute
instruction a direction that lead the crowd towards a common goal attribute
submission time the time when the task is accessible for the crowd attribute
closure time the time when the task expires attribute
confidentiality level a value that limits the access to certain types of information attribute
complexity level the amount of skills, experiences, and knowledge that is required to solve a crowdsourcing task attribute
priority level the importance of a crowdsourcing task compared to other concurrent tasks
visibility mode a specification of whether the workers can or can not see each other’s contributions attribute
interaction mode the configuration that enables or disables peer-to-peer collaboration attribute
estimated duration the estimated time required to complete a crowdsourcing task attribute
number of assignments the number of participants who will be assigned to one crowdsourcing task attribute
amount the number of points or the monetary value of the reward attribute
currency the currency of the monetary reward attribute
gender the gender that a participant should have attribute
minimum age (minAge) the minimum age that a participant should have attribute
maximum age (maxAge) the maximum age that a participant should have attribute
language the language that a participant should speak attribute
country the country in which a participant should live attribute
job title the job title that a participant should have attribute
qualification type the academic degree, certificate, or skill that is required to solve a crowdsourcing task attribute
qualification level the proficiency level that is required for a certain qualification attribute
approval rate the ratio of properly solved tasks to the number of submitted tasks attribute
number of approved tasks the number of properly solved tasks attribute
hardware device any hardware device (e.g., personal computer, mobile phone, smartphone, tablet computer) attribute
hardware feature any build-in feature of the hardware device (e.g., processor, memory, GPS, camera, accelerometer, gyrometer) attribute
operating system any operating system for personal computers or mobile devices (e.g., Microsoft Windows, OS X, Linux, Android, Windows Phone, iOS) attribute
software platform any operating system independent platform (e.g., Java, Firefox) attribute
issues (requester, project) the project that a requester issues relation
submits (participant, contribution) the contribution that a participant submits relation
includes (project, task) the crowdsourcing tasks that are included in a project relation
has next (task, task) the subsequent crowdsourcing task relation
has previous (task, task) the preliminary crowdsourcing task relation
owns (task, contribution) the contributions that belong to a crowdsourcing task relation
belongs to (contribution, task) the task that is associated to a contribution relation