Abstract: A computer implemented method and a subpopulation size estimation and uncertainty quantification system (SE system) for estimating size of a target subpopulation size and quantifying size estimation uncertainty are provided. The SE system constructs an entity database including unique entities mapped to contacts retrieved from a contact database. The SE system receives a query defining target attributes of entities of the target subpopulation from a user device. The SE system estimates size of the target subpopulation delimited by the query by determining a first estimate of the size of the target subpopulation matching the target attributes by performing a mark and recapture estimation, and by determining a second estimate of the size of the target subpopulation matching the target attributes by performing a catch per unit effort estimation.

Abstract: A computer implemented method and a subpopulation size estimation and uncertainty quantification system (SE system) for estimating size of a target subpopulation size and quantifying size estimation uncertainty are provided. The SE system constructs an entity database including unique entities mapped to contacts retrieved from a contact database. The SE system receives a query defining target attributes of entities of the target subpopulation from a user device. The SE system estimates size of the target subpopulation delimited by the query by determining a first estimate of the size of the target subpopulation matching the target attributes by performing a mark and recapture estimation, and by determining a second estimate of the size of the target subpopulation matching the target attributes by performing a catch per unit effort estimation.

Abstract: A computer implemented method and a subpopulation size estimation and uncertainty quantification system (SE system) for estimating size of a target subpopulation size and quantifying size estimation uncertainty are provided. The SE system constructs an entity database including unique entities mapped to contacts retrieved from a contact database. The SE system receives a query defining target attributes of entities of the target subpopulation from a user device. The SE system estimates size of the target subpopulation delimited by the query by determining a first estimate of the size of the target subpopulation matching the target attributes by performing a mark and recapture estimation, and by determining a second estimate of the size of the target subpopulation matching the target attributes by performing a catch per unit effort estimation.

Abstract: A method and system for crowdsourcing and managing contact and profile information of a user's contacts, and exchanging business and personal contact information through a mobile device, personal computer, or a web application. The system comprises a crowdsourcing intelligence module that provides the software, analysis, and algorithms for automatically populating and updating an individual's contact information in a user's address book based on contributed information and changes made to the individual's profile by a large community of users. The module also automatically populates and updates business profile, captures business's external social and business profiles, and analyzes demographic information which can then be transmitted to users.