Tutorial 3: Automated tagging in the UI

In Tutorial 2, you used a command-line tool to build a model. In this step, we'll use the UI to process documents using, among other things, the model you built. We're going to use the same simple named entity task that comes with MAT, and we're going to assume that your task is installed.  Like Tutorial 2, we're going to do this tutorial in file mode.

In this tutorial, we're going to make use of the model we built in Tutorial 2.

Step 1: Start up the Web server and UI

See the section on starting the UI in Tutorial 1. If you failed to shut down your Web server at the end of Tutorial 1, shut it down and restart it now; any models you built in Tutorial 2 won't be visible to the server until you restart it.

Step 2: Prepare a document for automated tagging

Back in Tutorial 1, we used the UI to prepare a document for hand tagging. Please repeat steps 3 and 4 from Tutorial 1, except you should use the "Demo" workflow instead of the "Hand annotation" workflow. Once you complete those steps, your window should look like this:

Note that the zone and tokenize steps are grayed out, indicating that they've been completed, and that the word units in the document are delimited by gray boxes.

Step 3: Tag

You may recall from Tutorial 2 that we built a default model for the Named Entity task. The UI knows about this default model, and we can use it now.

Press the forward button again. The "tag" label in the Status line should blink momentarily while the Web server loads the model, and then you should see a window like this:

Step 4: Undo and redo

In the UI, you can undo an operation. Let's say, for instance, you've applied the model as in step 3, but you haven't done any hand correction, and you've subsequently prepared a more accurate default model, and you want to undo the automated tagging and apply the newer model.

Press the backward button. The UI will warn you that it's about to undo unsaved changes:

Press "Yes", and the document will return to the state it was in at the end of Step 2. Press the forward button again, and the document will return to the state it was in at the end of Step 3.

At this point, you can hand-correct annotations in the same way you added and edited annotations in Tutorial 1. You can also save the document.

Step 5: Clean up (optional)

If you're not planning on doing any other tutorials, and you don't want the "Named Entity" task hanging around, remove it as shown in the final step of Tutorial 1.