MountainSort 5: tuning

Names on this page

Names in code font are fields of the sorter’s Rust configuration; --show-config prints them all with their values. The ones dspk sort accepts as flags are on the settings page. The rest are reachable from Rust only, for now.

MountainSort 5 has few settings by design: isosplit6 has no cluster count or tuning parameter. What to change:

Setting	Raise it	Lower it
detect_threshold (5.5)	fewer, larger spikes; small units missed	more small spikes and noise events
snippet_mask_radius_um (250 µm)	more channels per snippet: more context, more memory	fewer channels: faster, less separation of nearby units
training_duration_sec (300 s)	more spikes to cluster: better rare units, slower phase 1	faster; rare units may be missed
detect_channel_radius_um (50 µm)	fewer duplicate detections of one spike	more events per spike on dense probes
npca_per_subdivision (10)	more dimensions for isosplit6 (slower, may separate similar units)	coarser clusters