I am creating an algorithm that tries to estimate three time-series that should not cross each other (voice formants). The problem is sometimes the algorithm mistakes one time series with another and the algorithm "jumps" track. Here the blue line/orange line shares one track and orange line/green line also shares a track.

I was wondering if there is a name for algorithms that would fix these kinds of issue. An algorithm that estimates the best fit lines that minimize the number of sharp jumps for example. If this is a developed field I'd appreciate it if someone can point me to the right direction.

  • $\begingroup$ blue is on the bottom. what is "top blue"? $\endgroup$
    – user28715
    Sep 16 '19 at 19:28
  • $\begingroup$ I edited it for clarity, I just meant the track that the blue line shares with the orange $\endgroup$
    – kkawabat
    Sep 16 '19 at 19:31

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