| # Interaction data in GRT Interaction data The classification and coding of items can be accomplished by questions and answers about the features of the item, or by calculation. Specify which interaction type (question and answer, or calculation) you want to use in the Aspects by Feature (tigrt0104m000) session. When you use question and answer to classify items, one question allows for various answers (defined in an answer group), and each answer is linked to a specific code. That code (or return value) is included in the classification code for the item. Use the Questions (tigrt0120m000) session to create the questions. Use the Answer Groups (tigrt0125m000) session to create answer groups. Another way to classify items is with the help of calculations. You are prompted for a series of numbers. LN uses them to perform a calculation, the result of which is included in the classification code. You may have the calculation result compared with an answer group. The return value of the answer is included in the classification code. Use the Calculation ID (tigrt0130m000) session to define the calculation data. Use the Calculation Questions (tigrt0131m000) session to compose calculation questions. Use the Calculations (tigrt0132m000) session to define the calculation. Constraints enable you to define conditions before an aspect is being coded. The condition must be based on the preceding values in the classification code. A constraint always corresponds to one specific aspect linked to a family. Use the Constraints by Family Feature (tigrt0135m000) session to define the aspect-family combination(s) the constraint is linked with. Use the Constraint ID (tigrt0136m000) session to define the constraint ID. Use the Constraints (tigrt0137m000) session to define the constraint. |