The purpose of this article is to determine the orientation of schoolchildren in terms of grades in subjects and soft skills using machine learning methods. The article examined the difficulties of constructing a sigmoid function using multivariate linear regression, and also digitized grades obtained in selected subjects in the field of student education over 10 years and their various parameters, reasons and student capabilities. . Using these numbers, a training data set was created. As a result, a classification of subjects studied by schoolchildren over 10 years and their assessments was developed. Neural network architectures, modules, the most commonly used activation functions in machine learning algorithms, training methods and methods for constructing linear and logistic regression, disadvantages and opportunities are analyzed. Ways to simplify the gradient descent function for multivariate linear regression by vector calculation have been studied. Because there are many variables involved in this type of linear regression, vector calculations have proven to be more convenient. Methods for parallel calculation of gradient descent processes using vector calculations are also considered. In particular, the addition of training data table columns, transposition of coefficients - AT, vectorized representation of a linear function, hyperparameters for gradient descent (learning rate - , number of steps) were defined.
The article is devoted to econometric modeling and forecasting of business development using correlation and regression analysis. Also, a model for the development of GDP business is given, taking into account the indicators of the share of business in the number of employees in the volume of agricultural production, exports of the Republic of Uzbekistan, and the forecast value of the share of business in GDP by 2021–2025.
This article analyzes the tax burden and its impact on macroeconomic indicators, econometric modeling of the optimization of the tax burden in the national economy, gross domestic product, budget revenues and expenses, and the interdependence of tax burden indicators, the impact of changes in the tax burden indicator on the gross domestic product, budget revenues and cost impact analysis was carried out. Also, regression statistical analysis of GDP size and factors affecting it, influence of tax burden indicator on changes in the volume of state budget revenues and expenses in the national economy was analyzed based on econometric methods.
The article provides an econometric analysis of the influence of the attractiveness of the investment environment on the stability of the socio-economic development of the Navoi
region
Berilgan spectral ma’limotlar asosida bir o‘lchovli Dirak operatori parametrlarini tiklash masalasi qaralqai. Masalani yechisha qulay almashtirishlar hisoboga ixcham hisoblash algoritmi qurilgan.
In this paper, we proved the unique solvability of the local boundary value problem with the Frankl condition for a degenerating of mixed type equation with a fractional derivative
XXI asr - texnologiyalar asri hisoblanadi. Shunday ekan o‘quv jarayonida turli zamonaviy axborot vositalaridan o‘rinli foydalanish, kompyuterli ta’lim jarayonida darslarni o‘quvchi-talaba va kompyuter orasidagi munosabatlarga ko‘ra tashkil etish, boshqarish, nazorat qilish bugungi kunda dolzarb masalalardandir.Tabiiy fanlar hamda texnika fanlarida uchraydigan ko‘pgina masalalar differensial tenglamalarga keltiriladi,ya’ni ularning analitik yechimini topish nihoyatda murakkab masala,shu sababli taqribiy yechish usullaridan foydalanish ko‘proq samara beradi.Bunday muammolarni hal qilish uchun esa matematik paketlar mavjud bo‘lib,ushbu maqolada differensial tenglamalarni Maple dasturida yechish haqida gap boradi.Ya’ni, birinchi tartibli chiziqli oddiy differensial tenglamani Maple dasturida analitik yechimini topish dasturi tuzilib natija olingan.
This paper describes a method for constructing other Pythagorean pairs using a one Pythagorean pair. The process of constructing an infinite number of generating Pythagorean pairs is presented. Using a given Pythagorean pair, one can obtain a parametric equation that yields a Pythagorean triple. A parametric equation is given that gives an infinite number of Euler triples using one Pythagorean pair.
In this work an existence and uniqueness of solution of non-local boundary value problem with discontinuous matching condition for the loaded parabolic-hyperbolic equation involving the Riemann-Liouville fractional derivative have been investigated. The uniqueness of solution is proved by the method of integral energy and the existence is proved by the method of integral equations.
The article discusses the analysis of the results of 84 patients with non-organ sarcomas of the retroperitoneal space, who underwent complex treatment. Tumors of a malignant nature were histologically verified by trepan biopsy in all patients (100%). The patients were divided into 2 groups - main n = 38 and control n = 46. Neoadjuvant chemotherapy was performed in 45.2% of preoperative patients who belong to the study group. All patients underwent radical surgical intervention after 3 courses of PCT. After the operation, they received a course of radiation therapy (TFD-1.8-2Gy). Preoperative chemotherapy resulted in partial tumor regression in 22 (57.9%) patients. Stabilization was observed in 9 (23.7%) patients and progression of the process was noted in 7 (18.4%) patients. Without a relapse period in the main group was 10.2 + 0.4 months, without a metastatic period 11.4 + 0.5 months.