search

maxheld83 / pensieve

R package for the scientific study of human subjectivity.
https://www.maxheld.de/pensieve
GNU Affero General Public License v3.0
11 stars 2 forks source link

allow for signed distances #451

Open maxheld83 opened 5 years ago

maxheld83 commented 5 years ago

so then the cell entries are not a distance metric, technically speaking.

maxheld83 commented 5 years ago

non-metric distance matrices may serve to represent this; perhaps by modelling this is a directed graph with (negative) weights. https://en.wikipedia.org/wiki/Distance_matrix

maxheld83 commented 5 years ago

or maybe a similarity matrix might do the trick, because it allows negative values for very dissimilar objects (which is kinda sorta what we're after here?) https://en.wikipedia.org/wiki/Similarity_measure

maxheld83 commented 5 years ago

or maybe non-metric multidimensional scaling? nMDS? https://en.wikipedia.org/wiki/Multidimensional_scaling

maxheld83 commented 5 years ago

apparently nonmetric mds also deals with ordinal data, so maybe just -1, 1, 0

maxheld83 commented 5 years ago

this is also known as an oriented distance function https://en.wikipedia.org/wiki/Signed_distance_function