PFA Animation PC Space

Y-shaped simulation data

Oracle yet random K

For a Y-shaped data-set the “correct” number of factor is K = 4:

sos run FactorAmination.sos dsc2data --data DSC.rds
sos run FactorAmination.sos gif --data DSC.rds --project DSC.Y --K 4

### Arbitrary K

For another arbitrarily “wrong” K, e.g., K = 3

sos run FactorAmination.sos gif --data DSC.rds --project DSC.Y.3 --K 3

Initialize from block model

If we initialize it with a better set of start factors, i.e., use a block model to obtain initial factors

sos run FactorAmination.sos gif --data DSC.rds --project DSC.Y.block --blockstart 1

With potentially many factors,

sos run FactorAmination.sos gif --data DSC.rds --project DSC.Y.block50 --K 50

Deng 2014

For the 8 types of cells we have, we only allow for 3 factors and we use initialization from block model.

sos run FactorAmination.sos gif

Notice that one factor escapes the cluster of sample points it should belong to, at the end of the EM.