Burnside Acquisition, LLC

Permabit Technology Corporation

Edwin Olson

Norman H Margolus

Michael Fortson

Michael Sclafani

J Corwin Coburn

A method for constructing an index suitable for indexing a large set of records identified by long generally randomly distributed record names and for answering membership queries about the set, the method comprising assigning each different record a different record name, determining that a new record name is not already represented in the index by checking an entry in a first level index that is shorter than the complete new record name, and determining that a queried record name is already represented in the index by determining that the queried record name is represented in a second level index that contains enough information to reconstruct the complete queried record name.

Storage system for randomly named blocks of data

An index is constructed that is suitable for indexing a large set of records identified by randomly distributed record names and for answering membership queries about the set. The index has more than one level and the first-level index typically resides in RAM. Like a Bloom Filter, the first level index provides a non-membership indication with certainty and a membership indication with a controlled probability of error. Unlike a Bloom filter, entries in the first level index correspond uniquely to distinct records. Use is made of the statistical properties of a sorted list of random numbers in order to represent the first level index compactly.

Growing community of inventors

Cambridge, MA, United States of America

Edwin Olson