whan i add a utf8 chars

[texrg]

/home/oo/.gem/ruby/gems/classifier-reborn-2.2.0/lib/classifier-reborn/lsi.rb:313:in sort': comparison of Float with NaN failed (ArgumentError) from /home/oo/.gem/ruby/gems/classifier-reborn-2.2.0/lib/classifier-reborn/lsi.rb:313:in build_reduced_matrix'
from /home/oo/.gem/ruby/gems/classifier-reborn-2.2.0/lib/classifier-reborn/lsi.rb:143:in build_index' from /home/oo/.gem/ruby/gems/classifier-reborn-2.2.0/lib/classifier-reborn/lsi.rb:77:in add_item'

[Ch4s3]

@texrg What does you input look like?