# Work

Canonical URL: https://www.abeusher.com/work/
Last modified: 2026-10-03


My work keeps returning to the same problem: making data about space and time useful at scale. I’m now focused on new methods of advanced space-time analysis and automating semantic pattern analysis in large collections of text.


## Open source

- [timehash](https://github.com/abeusher/timehash): An open-source algorithm for variable-precision sliding windows of time, used to bin time values in large data collections. Implementations exist in Python, Go, Java, C, C#, and Perl, with community ports in JavaScript and Rust. Each added character narrows the time window by a factor of eight. BSD 3-Clause license.

- [geohash2kml](https://github.com/abeusher/geohash2kml): An open-source tool that converts geohashes to a 3-D thematic map in Google Earth KML. <no value>


## Patents

- [US 11,797,508 — Systems and methods for geospatial correlation](https://patents.google.com/patent/US11797508B1/en), granted 24 October 2023. First-named inventor; co-inventors: Samuel Stowers, Scott Barnes, Stephen Corbo, and Scott Fairgrieve.

- [US 12,038,895 — Systems and methods for geospatial correlation](https://patents.google.com/patent/US12038895B1/en), granted 16 July 2024. First-named inventor; co-inventors: Scott Fairgrieve, Scott Barnes, Stephen Corbo, and Samuel Stowers.


## Companies

- [Black Cape](https://blackcape.ai/): I co-founded Black Cape with Al Di Leonardo and Brian Poe and serve as Co-CEO and Lead Engineer. Black Cape engineers trustworthy AI systems that give US defense and intelligence teams a decisive edge.

- HumanGeo: I co-founded HumanGeo and served as CTO. The company grew from a start-up to $24 million in annual revenue and was acquired by The Radiant Group.

- The Radiant Group and DigitalGlobe: I served as CTO of The Radiant Group, then as CTO of DigitalGlobe Intelligence Solutions and Vice President of Radiant Solutions, a Maxar division.

- Google: I was a senior engineer in Google Enterprise, working on search and geospatial technology including Google Earth and Google Maps.


## Publications

- [Detection of Behavior Patterns of Interest Using Big Data Which Have Spatial and Temporal Attributes](https://scholar.google.com/citations?user=FlFYo_IAAAAJ): La Valley, Usher, Cook. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences.

- [Big Data in Survey Research: AAPOR Task Force Report](https://scholar.google.com/citations?user=FlFYo_IAAAAJ): Japec, Kreuter, Berg, et al. Public Opinion Quarterly 79(4), 839–880. Task force co-author.

- [Detecting Dark Networks Using Geo-temporal and Pattern-Based Network Analysis Techniques](https://www.cambridge.org/core/books/illuminating-dark-networks/5254132C080DEC28CC5718451573A90A): La Valley, Usher, Halman. Chapter 5 in Illuminating Dark Networks, Cambridge University Press, pp. 71–83.

- [Skills Required to Integrate Big Data into Public Opinion Research](https://scholar.google.com/citations?user=FlFYo_IAAAAJ): Usher. 70th Annual Conference of the American Association for Public Opinion Research.


## Recognition

- [FCW Federal 100](https://www.nextgov.com/security/2015/03/federal-100-abe-usher/207634/) (2015): Recognized for building an engineering team that delivered four analytic tools in four months.

- [MORS David Rist Prize](https://www.mors.org/Professional-Development/Prizes/David-Rist-Prize) (2016): Shared for the study “Data Science for Threat Finance Intelligence.”