Waveform analysis method, waveform analysis apparatus, and analysis apparatus

A waveform analysis apparatus for analyzing a signal waveform that is a chromatogram or a spectrum, the apparatus comprising:

• a waveform decomposition unit configured to decompose a target signal waveform to be analyzed into a plurality of processing target waveforms, each having a predetermined data size, so as to cover the entire waveform in a horizontal axis direction;
• a region estimation unit configured to divide each of the plurality of processing target waveforms into a plurality of partial waveforms in the horizontal axis direction, and for each processing target waveform, using a trained model created by machine learning using a plurality of reference waveforms in which a position of a peak portion is known for identifying a peak portion included in an input waveform, to estimate whether each of the plurality of partial waveforms included in the processing target waveform corresponds to each of a plurality of different types of regions including a peak region and a non-peak region, and to obtain individual region estimation information reflecting a probability of the correspondence;
• an integration processing unit configured to integrate the individual region estimation information obtained for each partial waveform of each of the plurality of processing target waveforms in the region estimation unit, to obtain region estimation information corresponding to the whole or a part of the target signal waveform;
• and
• a region determination unit configured to use the region estimation information to determine which of the plurality of regions each part in the whole or a part of the target signal waveform is.