Synthetic training datasets for personally identifiable information classifiers

A non-transitory computer readable medium having stored thereon a sequence of instructions which, when stored in memory and executed by one or more processors causes the one or more processors to perform a set of acts for implementing privacy controls over certain data of an electronic document collaboration system, the set of acts comprising:

• identifying a storage facility that stores content objects and associated metadata, wherein the associated metadata comprises one or more of, first metadata pertaining to storage of the content objects onto electronic storage media of the storage facility, or second metadata pertaining to access characteristics of the content objects on the electronic storage media of the storage facility;
• identifying one or more content objects in the storage facility, wherein the one or more content objects are analyzed to determine modifications to individual ones of the one or more content objects or the associated metadata;
• analyzing the one or more content objects to identify personally identifiable information (PII) within the individual ones of the one or more content objects, wherein identification of the PII is based at least in part on outputs of a PII classifier, and wherein training set entries used for training the PII classifier are generated by (i) providing a hintword in association with a corresponding label, (ii) providing an n-gram, wherein constituent words of the n-gram are randomly selected from a repository of natural language words, and (iii) injecting the hintword into the n-gram;
• and
• modifying the one or more content objects or the associated metadata based at least in part upon the identification of the PII in the one or more content objects, wherein the one or more content objects or the associated metadata is modified to change at least one of a content object itself, first metadata of the content object pertaining to storage characteristics of the object, or second metadata of the content object to change to access characteristics of the content object.

A system for implementing privacy controls over certain data of an electronic document collaboration system, the system comprising:

• a storage medium having stored thereon a sequence of instructions;
• and
• one or more processors that execute the sequence of instructions to cause the one or more processors to perform a set of acts, the set of acts comprising,
• identifying a storage facility that stores content objects and associated metadata, wherein the associated metadata comprises one or more of, first metadata pertaining to storage of the content objects onto electronic storage media of the storage facility, or second metadata pertaining to access characteristics of the content objects on the electronic storage media of the storage facility;
• identifying one or more content objects in the storage facility, wherein the one or more content objects are analyzed to determine modifications to individual ones of the one or more content object or the associated metadata;
• analyzing the one or more content objects to identify personally identifiable information (PII) within the individual ones of the one or more content objects, wherein identification of the PII is based at least in part on outputs of a PII classifier, and wherein training set entries used for training the PII classifier are generated by (i) providing a hintword in association with a corresponding label, (ii) providing an n-gram, wherein constituent words of the n-gram are randomly selected from a repository of natural language words, and (iii) injecting the hintword into the n-gram;
• and
• modifying the one or more content objects or the associated metadata based at least in part upon the identification of the PII in the one or more content objects, wherein the one or more content objects or the associated metadata is modified to change at least one of a content object itself, first metadata of the content object pertaining to storage characteristics of the object, or second metadata of the content object to change access characteristics of the content object.