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Speakers

AJ Friend

Employers on the program

  1. 2026Waymo3 talks
Events1
Conferences1
Talks3
Years active2026
Talk freshness1003 different talks in 3 · 1 circuit, 24 months

The year around now

Talks in the past 12 months and announced talks ahead, one row per conference, January to December. Hover a mark for the talk.

JanFebMarAprMayJunJulAugSepOctNovDecFOSS4G North AmericaFOSS4G North America
Held in the past 12 months Next 12 months Today, Nov 9, 2026

Appearances by year

201920202021202220232024202520262027
  • FOSS4G North America

Talks

DateEventConferenceRoleTitleLinks
Nov 2, 2026FOSS4G North America 2026FOSS4G North AmericaspeakerDGGS Set Design: Compaction-Aware Optimization
as Waymo
We can select sets of DGGS cells meeting some criterion (like travel time for isochrones) while staying compactible to reduce storage. We pose an optimization…Show less

We can select sets of DGGS cells meeting some criterion (like travel time for isochrones) while staying compactible to reduce storage. We pose an optimization problem trading off the two objectives, give examples across DGGSs, and extend to co-compaction.

Nov 2, 2026FOSS4G North America 2026FOSS4G North AmericaspeakerHierarchical (Co-)Compaction for DGGS Cells
as Waymo
Compaction reduces the storage cost of cell sets in hierarchical DGGSs. We cover compaction along with efficient set membership querying, why the "gaps" in…Show less

Compaction reduces the storage cost of cell sets in hierarchical DGGSs. We cover compaction along with efficient set membership querying, why the "gaps" in mixed-resolution sets are merely an illusion, and a new co-compaction algorithm for additional savings.

Nov 2, 2026FOSS4G North America 2026FOSS4G North AmericaspeakerHow Squished Are Your DGGS Cells? A Spherical Aspect Ratio
as Waymo
We define an aspect ratio for spherical point sets to compare DGGSs, complementing metrics like area variance or isoperimetric quotient. We share a fast…Show less

We define an aspect ratio for spherical point sets to compare DGGSs, complementing metrics like area variance or isoperimetric quotient. We share a fast open-source implementation, survey aspect ratio distributions across grids, and discuss generalizing to the ellipsoid.

Frequent co-speakers

No one else spoke at two or more of the same events.

Speakers with the same name are merged into one entry, so this page may combine more than one person. Affiliations are shown as each conference listed them.