Chadd Creighton Merrigan

Title: Chadd Creighton Merrigan and Search Index Innovations.

Introduction

Chadd Creighton Merrigan is an inventor based in Redmond, Washington. His work includes innovations in search indexing and methods for organizing searches. He is associated with Microsoft Technology Licensing, LLC. Merrigan is credited with 4 patents.

Latest Patents

Merrigan’s listed patent work includes “Search index format optimizations,” which describes a compact search index designed for efficient retrieval. The approach reduces stored information by calculating some data rather than recording it, infers the length of variable-length entries from their categories, and uses differences between document identifiers to create a compact set of values for compression. It also describes excluding unusually large differences before encoding to improve compression performance.

Another listed invention, “System and method for scoping searches using index keys,” uses index keys associated with a search’s scope rather than with document content. These scope keys can narrow the documents considered during a search. The system also recognizes and stores compound scopes, helping avoid repeating searches for complex scopes.

Career Highlights

Merrigan’s patent portfolio reflects work on improving search systems through efficient index structures and search-scope management. His listed affiliation is Microsoft Technology Licensing, LLC.

Collaborations

Merrigan’s listed coworkers include Dmitriy Meyerzon and Raif Khassanov.

Conclusion

Chadd Creighton Merrigan’s documented inventions focus on making search indexes more compact and searches more efficiently scoped.