Classifier	Description
Attributes
Patterns & Phrases	Classify data using regex patterns, key phrases, dictionaries, and scripts. Regex patterns are used to identify alphanumeric strings of a certain format, such as 123-45-6789.
File Labeling	Classify data by using the labeling system(s).
File properties	Classify data by file name, type, or size. File name identifies files by their extension. File type identifies files by their magic number (an internal identifier).
Fingerprints
File fingerprinting	Fingerprint files or directories, including Microsoft SharePoint and IBM Domino directories.
Database fingerprinting	Fingerprint database records directly from your database table, Salesforce table, or CSV file.
Machine Learning
Machine learning	Provide examples of the data to protect, so the system can learn from them and identify data of a similar nature.

Important  After classifying content, add the content classifier to a rule and policy; otherwise, it has no effect. You are prompted to do this when you create a new classifier.

Button	Description
New	Opens a dialog so you can create a new classifier of the selected type.
Delete	Deletes the selected classifier. Be sure to check where the classifier's used before deleting it. (See Where Used, below.) Note: You can delete only one classifier at a time. If you're deleting a fingerprint classifier and the crawler is unresponsive, you're asked to delete the classifier manually. (See Manually deleting fingerprinting classifiers for instructions.)
Create Rule from Classifier	Creates a rule from the selected classifier and lets you mark it for use in an existing or new policy. Note: You can create a rule from only one classifier at a time. See Creating a rule from a content classifier for more details on this shortcut.
Where Used	Shows which policies, rules, and exceptions use this classifier.

Button	Description
Start	Begins the fingerprinting or machine learning scan. Alerts that the task will be moved into manual mode.
Pause	Fingerprinting only. Pauses the scan.
Stop	Stops the fingerprinting or machine learning scan. Alerts that the task will resume at the next scheduled time or the next time it is run manually.
More Actions	In addition to Create Rule from Classifier and Where Used, fingerprinting and machine learning classifiers offer a reporting option under More Actions: Download Fingerprinting Report - Database fingerprinting only. Downloads a detailed report on fingerprinting activities. Download Machine Learning Report - Machine learning classifiers only. Downloads a detailed report on machine learning processes. Using this report, you can: Understand the expected accuracy of the classifier (percentage of misclassified files). You can decide how to use the classifier or adjust the sensitivity as needed in the Details pane. Discover documents that were found when processing the positive examples folders but did not appear to belong there. Learn the accuracy of the classifier with and without these documents. Use the Details pane to indicate whether or not to ignore inconsistent examples.