نتایج جستجو برای: بیزین ساده svm
تعداد نتایج: 55540 فیلتر نتایج به سال:
Comparing with the standard L2-norm support vector machine (SVM), the L1-norm SVM enjoys the nice property of simultaneously preforming classification and feature selection. In this paper, we investigate the statistical performance of L1-norm SVM in ultra-high dimension, where the number of features p grows at an exponential rate of the sample size n. Different from existing theory for SVM whic...
A novel training method has been proposed for increasing efficiency and generalization of support vector machine (SVM). The efficiency of SVM in classification is directly determined by the number of the support vectors used, which is often huge in the complicated classification problem in order to represent a highly convoluted separation hypersurface for better nonlinear classification. Howeve...
Word Ordering Errors (WOEs) are the most frequent type of grammatical errors at sentence level for non-native Chinese language learners. Learners taking Chinese as a foreign language often place character(s) in the wrong places in sentences, and that results in wrong word(s) or ungrammatical sentences. Besides, there are no clear word boundaries in Chinese sentences. That makes WOEs detection a...
This paper regards the query keywords selection problem in source retrieval as learning a ranking model to choose the method of keywords extraction over suspicious document segments. Four basic methods are used in our ranking function: BM25, TFIDF, TF and EW. Then, a ranking model based on Ranking SVM is proposed to rank the query keywords group which is contributed to get the higher evaluation...
We consider image retrieval with structured object queries – queries that specify the objects that should be present in the scene, and their spatial relations. An example of such queries is “car on the road”. Existing image retrieval systems typically consider queries consisting of object classes (i.e. keywords). They train a separate classifier for each object class and combine the output heur...
The phenomenal growth of social media, both in scale and importance, has created a unique opportunity to track information diffusion and the spread of influence, but can also make efficient tracking difficult. Given data streams representing blog posts on multiple blog channels and a focal query post on some topic of interest, our objective is to predict which of those channels are most likely ...
کانسار طلای اپیترمال ساریگونای در استان کردستان، یکی از مهمترین کانسارهای کشفشده طلای ایران در رده جهانی بهشمار میرود. این کانسار از نوع کانسارهای طلای اپیترمال سولفیداسیون پایین است. در این مقاله با استفاده از دادههای زمینشیمیایی محیط خاکی و به کمک چهار روش طبقهبندی بیز، -k نزدیکترین همسایگی، پنچره پارزن و بیزی ساده که همگی بر اساس تئوری بیزین بنا نهاده شدهاند، موقعیت کانیزایی طلا...
آشکارسازی صحیح و بهموقع تغییرات پوشش و کاربری اراضی یکی از مهمترین موضوعات در حوزه برنامهریزی و مدیریت اراضی میباشد. در دهههای اخیر، تصاویر سنجش از دور به منابع ارزشمندی برای شناسایی تغییرات پوشش و کاربری اراضی تبدیل شدهاند. حدآستانهگذاری تصویر اختلاف، از متداولترین تکنیکهای آشکارسازی تغییرات در تصاویر ماهوارهایی چندزمانه میباشد. نظر به اینکه تکنیکهای متداول حدآستانهگذاری برای فضا...
In this present paper it deals with the Gender Classification from ECG signal using Least Square Support Vector Machine (LS-SVM) and Support Vector Machine (SVM) Techniques. The different features extracted from ECG signal using Heart Rate Variability (HRV) analysis are the input to the LS-SVM and SVM classifier and at the output the classifier, classifies whether the patient corresponding to r...
This paper proposes the ellipsoidal SVM (e-SVM) that uses an ellipsoid center, in the version space, to approximate the Bayes point. Since SVM approximates it by a sphere center, e-SVM provides an extension to SVM for better approximation of the Bayes point. Although the idea has been mentioned before (Ruján (1997)), no work has been done for formulating and kernelizing the method. Starting fro...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید