Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a collective address book system. One of the methods includes: receiving, at the system, a request from a user regarding a topic; selecting automatically, at the system, a potential referrer, the potential referrer selection being based on the likelihood that the potential referrer will respond to the user's request; and communicating automatically with the potential referrer regarding the user's request without the system indicating to the user that the potential referrer has been contacted.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a collective address book system. One of the methods includes: receiving a request from a user to contact a person of interest; determining that contact information for the person of interest is not available in the user's contact information to which the system has access; determining that the collective address book system has access to contact information for the person of interest; generating proxy contact data for the person of interest; and providing the proxy contact data to the first user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, sharing sensitive information with authorized individuals while reducing the likelihood that the sensitive information will be shared with unauthorized individuals. One of the methods includes receiving from a user an indication that a particular piece of information is sensitive information; automatically individually encrypting the sensitive information; automatically logging each access of the sensitive information; and reporting to the user that the sensitive information has been accessed, wherein the information management system to which the user indicates that a particular piece of information is sensitive information is the same information management system that reports to the user that the encrypted sensitive information has been accessed.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a collective address book system. One of the methods includes: receiving a request from a user to contact a person of interest; determining that contact information for the person of interest is not available in the user's contact information to which the system has access; determining that the collective address book system has access to contact information for the person of interest; generating proxy contact data for the person of interest; and providing the proxy contact data to the first user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a collective address book system. One of the methods includes: receiving a request from a user to contact a person of interest; determining that contact information for the person of interest is not available in the user's contact information to which the system has access; determining that the collective address book system has access to contact information for the person of interest; generating proxy contact data for the person of interest; and providing the proxy contact data to the first user.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for resolving inconsistencies in information graphs.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, sharing sensitive information with authorized individuals while reducing the likelihood that the sensitive information will be shared with unauthorized individuals. One of the methods includes receiving from a user an indication that a particular piece of information is sensitive information; automatically individually encrypting the sensitive information; automatically logging each access of the sensitive information; and reporting to the user that the sensitive information has been accessed, wherein the information management system to which the user indicates that a particular piece of information is sensitive information is the same information management system that reports to the user that the encrypted sensitive information has been accessed.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for identifying user-specific values for entity attributes. One of the methods includes maintaining data representing a particular cluster of a plurality of claims about a particular entity, wherein each claim is an assertion by a respective claimant about an attribute value of the particular entity; receiving a request for a value of a particular attribute of the particular entity that has been submitted by a requesting user; determining, from attribute values for the particular attribute identified by the claims in the particular cluster, a user-specific attribute value for the particular attribute value; and providing the user-specific attribute value in response to the request.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for predicting mobile device permissions. One of the methods includes receiving a request from a user of a mobile device, the request defining a task to be carried out on behalf of the user by a virtual assistant application installed on the mobile device; determining, by processing data characterizing the task using one or more machine learning models, one or more mobile device permissions that will likely need to be granted by the user in order for the virtual assistant application to carry out the task; and causing a prompt to be presented on the mobile device that allows the user to grant the one or more permissions.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a collective address book system. One of the methods includes: receiving, at the system, a request from a user regarding a topic; selecting automatically, at the system, a potential referrer, the potential referrer selection being based on the likelihood that the potential referrer will respond to the user's request; and communicating automatically with the potential referrer regarding the user's request without the system indicating to the user that the potential referrer has been contacted.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a collective address book system. One of the methods includes: receiving a request from a user to contact a person of interest; determining that contact information for the person of interest is not available in the user's contact information to which the system has access; determining that the collective address book system has access to contact information for the person of interest; generating proxy contact data for the person of interest; and providing the proxy contact data to the first user.