Artif Intell Med - Machine learning of clinical performance in a pancreatic cancer database.

Tópicos

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Resumo

JECTIVE: We consider predictive models for clinical performance of pancreatic cancer patients based on machine learning techniques. The predictive performance of machine learning is compared with that of the linear and logistic regression techniques that dominate the medical oncology literature.METHODS AND MATERIALS: We construct predictive models over a clinical database that we have developed for the University of Massachusetts Memorial Hospital in Worcester, Massachusetts, USA. The database contains retrospective records of 91 patient treatments for pancreatic tumors. Classification and regression targets include patient survival time, Eastern Cooperative Oncology Group (ECOG) quality of life scores, surgical outcomes, and tumor characteristics. The predictive performance of several techniques is described, and specific models are presented.RESULTS: We show that machine learning techniques attain a predictive performance that is as good as, or better than, that of linear and logistic regression, for target attributes that include tumor N and T stage, survival time, and ECOG quality of life scores. Bayesian techniques are found to provide the best performance overall. For tumor size as the target attribute, however, logistic regression (respectively linear regression in the case of a numerical as opposed to discrete target) performs best. Preprocessing in the form of attribute selection and supervised attribute discretization improves predictive performance for most of the predictive techniques and target attributes considered.CONCLUSION: Machine learning provides techniques for improved prediction of clinical performance. These techniques therefore merit consideration as valuable alternatives to traditional multivariate regression techniques in clinical medical studies.

Resumo Limpo

jectiv consid predict model clinic perform pancreat cancer patient base machin learn techniqu predict perform machin learn compar linear logist regress techniqu domin medic oncolog literaturemethod materi construct predict model clinic databas develop univers massachusett memori hospit worcest massachusett usa databas contain retrospect record patient treatment pancreat tumor classif regress target includ patient surviv time eastern cooper oncolog group ecog qualiti life score surgic outcom tumor characterist predict perform sever techniqu describ specif model presentedresult show machin learn techniqu attain predict perform good better linear logist regress target attribut includ tumor n t stage surviv time ecog qualiti life score bayesian techniqu found provid best perform overal tumor size target attribut howev logist regress respect linear regress case numer oppos discret target perform best preprocess form attribut select supervis attribut discret improv predict perform predict techniqu target attribut consideredconclus machin learn provid techniqu improv predict clinic perform techniqu therefor merit consider valuabl altern tradit multivari regress techniqu clinic medic studi

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