To use the SYMPTOM_TEXT variable to create a model, complete the
following steps:
-
Right-click
the Text Miner — CST node, and select
Copy from the menu. Right-click an empty space in the diagram workspace
and select
Paste. Connect the Text Miner
— COSTART node to the Text Miner — CST (2) node.
This second
Text Miner — CST node will be used to analyze the SYMPTOM_TEXT
variable. SYMPTOM_TEXT will be the default parse variable because
it is the longest text field in the data set. You need to specify
COSTRING as a parse variable as well.
-
Select
the second Text Miner — CST (2) node. Click the
button for the
Variables property in the Properties panel.
-
In the
Variables window, ensure that the following values are set:
-
Set the
Use value of
SYMPTOM_TEXT to
Yes.
-
Set the
Use value of
costring to
Yes.
-
Set the
Use value of
serious to
Yes.
-
Ensure
that the following properties are set in the Properties panel:
-
-
Set
SVD Resolution to
Low.
-
Set
Term Weight to
Mutual Information.
-
Right-click
the new Text Miner node, and select
Run.
Click
Yes in the Confirmation dialog box.
Click
OK in the Run Status dialog box.
-
From the
Model tab, drag and drop a Decision Tree node into the
diagram workspace. Connect the Text Miner — CST (2) node to
the Decision Tree node. You will use the decision tree to see whether
text mining the original text can do a better job of predicting serious
events than just mining the COSTART terms.
-
Right-click
the new Decision Tree node and select
Rename. Type
Decision Tree — ST, where “ST” stands for “Symptom Text,”
in the Node Name text box. Click
OK.
-
Click
the
button for the
Variables property in the Decision Tree — ST properties panel. The
Variable window opens.
-
Click
and scroll to select all of the
_ROLL_ variables,
and then set the _ROLL_
Use values to
No.
-
Click
OK to save your changes.
-
Right-click
the Decision Tree — ST node, and select
Run. Click
Yes in the Confirmation dialog box.
Click
OK in the Run Status dialog box when
the node has finished running.
-
From the
Model tab, drag and drop a Decision Tree node and connect
it to the Text Miner — CST (2) node.
-
Right-click
the new Decision Tree node, and select
Rename. Type
Decision Tree — CST, where “CST” stands for “COSTART and Symptom
Text,” in the Node Name box. Click
OK. This node will let you see how well you can predict serious events
with all the information available to you. Use the default settings
for the node.
