Oncologists nowadays are faced with big amount of heterogeneous medical data of diagnostic studies. Possible errors in determining the nature and extent of spread the tumor process will inevitably reduce the effectiveness of treatment and increase the unnecessary costs to it. To reduce the burden on clinicians, various computer-aided solutions based on machine learning algorithms are being developed. We made an attempt to evaluate effectiveness of thirteen machine learning algorithms in the tasks of classification of pathologic tissue samples in cancerous thorax based on gene expression levels. For a preliminary study we used open data set of molecular genetics composition of lung adenocarcinoma and pleural mesothelioma. Effectiveness of machine learning algorithms was evaluated by Matthews correlation coefficient and Area Under ROC Curve. Best results were showed by two methods: Bayesian logistic regression and Discriminative Multinomial Naive Bayes classifier. Nevertheless, all of the methods were effective at automatic discrimination of two types of cancer. That proves machine learning algorithms are applicable in lung cancer classification. In the future studies it will be carried out a similar analysis of the diagnostic value of methods for other malignancies with more complex differential morphological diagnosis. Similar methods can be applied to other diagnostic studies including computerized tomography image analysis in the differential diagnosis of lung nodules.
One of the most important problems of modern medicine, which, in particular, precludes the effective implementation of new diagnostic methods such as population screening, is the steady increase of volumes of important medical data, as well as insufficient attention to the analysis of the dynamics of the patients’ condition. These problems can be solved by the information support of medical specialist in the process of research and in the formation of recommendations for further management of patients. In the study, we examined the possible ways of solving these problems through the development of software tools for creation of knowledge bases of recommendations for monitoring and treatment of various diseases, as well as intelligent decision support by the example of cancer. The results of tests of these solutions allow speaking about their effectiveness and applicability in clinical practice.
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