High Quality Content by WIKIPEDIA articles! In statistical learning theory, or sometimes computational learning theory, the VC dimension (for Vapnik–Chervonenkis dimension) is a measure of the capacity of a statistical classification algorithm, defined as the cardinality of the largest set of points that the algorithm can shatter. It is a core concept in Vapnik–Chervonenkis theory, and was originally defined by Vladimir Vapnik and Alexey Chervonenkis. Informally, the capacity of a...
High Quality Content by WIKIPEDIA articles! In statistical learning theory, or sometimes computational learning theory, the VC dimension (for Vapnik–Chervonenkis dimension) is a measure of the capacity of a statistical classification algorithm, defined as the cardinality of the largest set of points that the algorithm can shatter. It is a core concept in Vapnik–Chervonenkis theory, and was originally defined by Vladimir Vapnik and Alexey Chervonenkis. Informally, the capacity of a classification model is related to how complicated it can be. For example, consider the thresholding of a high-degree polynomial: if the polynomial evaluates above zero, that point is classified as positive, otherwise as negative. A high-degree polynomial can be wiggly, so it can fit a given set of training points well. But one can expect that the classifier will make errors on other points, because it is too wiggly. Such a polynomial has a high capacity. A much simpler alternative is to threshold a linear function. This polynomial may not fit the training set well, because it has a low capacity. We make this notion of capacity more rigorous below.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.
Сегодняшний бизнес опирается на эффективное использование данных для прогнозирования тенденций и продаж. Аналитическое прогнозирование - инструмент, который может это сделать, и данная книга просто и понятно показывает, как его использовать. Вы научитесь подготавливать и обрабатывать свои данные, ставить цели, создавать прогностические модели, привлекать к работе заинтересованные стороны вашей...
Издательство:
Вильямс/Диалектика
Дата выхода: февраль 2020
Оставить комментарий