Using the Jet API
In addition to running JET stand-alone, you can
use
it as part of another application. In this case jet.jar (i.e.,
jet-jar-1xx.zip)
must be included among the libraries when running your
application.
Here is a small sample program which uses Jet:
1 import Jet.*;
2 import Jet.Tipster.*;
3 import java.util.Vector;
4 import
java.io.IOException;
5
6 class UseJet {
7
8 public static void
main(String
args[]) throws IOException {
9
System.out.println("Starting
UseJet...");
10
JetTest.initializeFromConfig("C:/My
Documents/Jet/chunk3.properties");
11 String txt =
"<TEXT>My
first sentence to be analyzed for class.</TEXT>";
12 Document doc =
new Document(txt);
13
Control.processDocument
(doc, null, true, 1);
14 Vector v =
doc.annotationsOfType("constit");
15 for (int i=0;
i<v.size(); i++) {
16
Annotation
a = (Annotation) v.get(i);
17
System.out.println
("Constit " + a.get("cat") + " over " + doc.text(a));
18 }
19 }
20 }
and a brief explanation of this program:
- 10
- initializeFromConfig loads a JET properties file and all
the associated
resources (grammars, lexicons, patterns, HMMs, etc.). The
properties
file should be the same as for a stand-alone run.
- 11-12
- sets up the document to be analyzed. By default, only text
inside
<TEXT> ... </TEXT> is analyzed.
- 13
- processes the document. The parameters to processDocument
are
-
the document itself
- if non-null, a BufferedWriter
into which output from WriteSGML is written
-
true to pop up a window showing the processed document
-
an integer used to label the pop-up window ("Jet Document i")
- 14-17
- retrieve annotations of type constit from the document
and print
out, one per line, the cat feature of the annotation and the
text
spanned by the annotation