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The “Sentences” tab shows the criteria used by 3ET when choosing the sentences used by the exercise.
Strictly speaking, these criteria are expressed as an MQL statement. But MQL is a rather complex language and therefore 3ET has a more user-friendly way to specify simple search criteria.
If the user-friendly specification is used, a search criterion consists of:
Certain databases only know the sentence unit word, others also have sentence units such as clause or phrase. A sentence unit has a number of features. If the sentence unit is word, the features may, for example, include part of speech and case. Each feature has a value. For example, the case feature may have the value genitive.
The search criteria may specify that a certain feature must have a certain value, or that the feature must not have a certain value. When the program generates questions, it will look for sentences containing sentence units of the specified type with the specified feature values.
If the exercise is loaded through the File > Load exercise menu item, the tab may look like this:
This means: 3ET will look for sentences containing sentences units of the type word whose features meet these requirements: The case feature must be neither accusative nor nominative and the part of speech feature must be either noun or personal pronoun.
If the exercise is loaded through the File > Edit exercise or File > New exercise menu item, the tab may look like this:
By choosing either “MQL statement to select sentences” or “Friendly feature selector”, you indicate if you want to specify the search criteria as an MQL statement or in a more user-friendly manner.
If the user-friendly method is selected, you use “Sentence unit type” to specify the kind of sentence unit that should be used when selecting sentences. The drop-down list next to “Feature” shows the features that are available for the specified sentence unit; and in the box below, you specify the feature values. The specification of various types of features is described here.
The “Clear” button erases all criteria on this page.
You may often want to use the same criteria for choosing sentence units as for choosing sentences. By ticking “Use this for sentence unit selection” you indicate that sentence units should be chosen based on the same criteria as the ones specified here. This option is only available if the friendly feature selector is being used.
If you choose to specify the search criteria as an MQL statement, the
program will surround the statement by [sentence ...], where
the three dots are replaced by the statement you provide. This means
that 3ET will search for a sentence containing whatever is specified in the
MQL statement. It is recommended to include the word NORETRIEVE
in the MQL statement as this will cause the program to run considerably
faster. More information about MQL can be found here.
Go to main page Updated: 2009-07-07 13:18:47