Extracting the latent needs of dementia patients and caregivers from transcribed interviews in Japanese: an initial assessment of the availability of morpheme selection as input data with Z-scores in machine learning

Nanae Tanemura
Tsuyoshi Sasaki
Ryotaro Miyamoto
Jin Watanabe
Michihiro Araki
Junko Sato
Tsuyoshi Chiba

Abstract

 Background

 Given the increasing number of dementia patients worldwide, a new method was developed for machine learning models to identify the ‘latent needs’ of patients and caregivers to facilitate patient/public involvement in societal decision making.

 Methods

 Japanese transcribed interviews with 53 dementia patients and caregivers were used. A new morpheme selection method using Z-scores was developed to identify trends in describing the latent needs. F-measures with and without the new method were compared using three machine learning models.

 Results

 The F-measures with the new method were higher for the support vector machine (SVM) (F-measure of 0.81 with the new method and F-measure of 0.79 without the new method for patients) and Naive Bayes (F-measure of 0.69 with the new method and F-measure of 0.67 without the new method for caregivers and F-measure of 0.75 with the new method and F-measure of 0.73 without the new method for patients).

 Conclusion

 A new scheme based on Z-score adaptation for machine learning models was developed to predict the latent needs of dementia patients and their caregivers by extracting data from interviews in Japanese. However, this study alone cannot be used to assign significance to the adaptation of the new method because of no enough size of sample dataset. Such pre-selection with Z-score adaptation from text data in machine learning models should be considered with more modified suitable methods in the near future.

BMC Medical Informatics and Decision Making

Springer Science and Business Media LLC

23

203

10.1186/s12911-023-02303-3

https://doi.org/10.1186/s12911-023-02303-3
https://link.springer.com/content/pdf/10.1186/s12911-023-02303-3.pdf
https://link.springer.com/article/10.1186/s12911-023-02303-3/fulltext.html
https://researchmap.jp/7000025167/research_projects/27408178