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| |
| [[_ugr.tools.uimafit.experiments]] |
| = Running Experiments |
| |
| The _uimafit-examples_ module contains a package [package]#org.apache.uima.fit.examples.experiment.pos# which demonstrates a very simple experimental setup for testing a part-of-speech tagger. |
| You may find this example more accessible if you check out the code from subversion and build it in your own environment. |
| |
| The documentation for this example can be found in the code itself. |
| Please refer to [class]``RunExperiment`` as a starting point. |
| The following is copied from the javadoc comments of that file: |
| |
| [quote] |
| `RunExperiment` demonstrates a very common (though simplified) experimental setup in which gold |
| standard data is available for some task and you want to evaluate how well your analysis engine |
| works against that data. Here we are evaluating `BaselineTagger` which is a (ridiculously) |
| simple part-of-speech tagger against the part-of-speech tags found in |
| `src/main/resources/org/apache/uima/fit/examples/pos/sample-gold.txt` |
| |
| The basic strategy is as follows: |
| |
| * post the data _as is_ into the default view, |
| * parse the gold-standard tokens and part-of-speech tags and put the results into another view we will call __GOLD_VIEW__, |
| * create another view called _SYSTEM_VIEW_ and copy the text and [class]``Token`` annotations from the _GOLD_VIEW_ into this view, |
| * run the [class]``BaselineTagger`` on the _SYSTEM_VIEW_ over the copied [class]``Token`` annoations, |
| * evaluate the part-of-speech tags found in the _SYSTEM_VIEW_ with those in the _GOLD_VIEW._ |
