نتایج جستجو برای: کلاسه بند svm

تعداد نتایج: 26397  

2010
Weiwei Cheng Krzysztof Dembczynski Eyke Hüllermeier

This paper introduces two new methods for label ranking based on a probabilistic model of ranking data, called the Plackett-Luce model. The idea of the first method is to use the PL model to fit locally constant probability models in the context of instance-based learning. As opposed to this, the second method estimates a global model in which the PL parameters are represented as functions of t...

2012
Dong Cao Zhen Lei Zhiwei Zhang Jun Feng Stan Z. Li

This paper proposes a human age estimation method using Ranking SVM method. Given a face image, most previous methods estimate the human age directly. However, the face images from the same age vary so much that it’s really a difficult problem to estimate the human age accurately. In this work, we adopt an alternative way to estimate the human age. First, the rank relationship of the ages is le...

Journal: :CoRR 2016
Minh-Tien Nguyen Viet-Anh Phan Truong-Son Nguyen Minh-Le Nguyen

This paper presents our method to retrieve relevant queries given a new question in the context of Discovery Challenge: Learning to Re-Ranking Questions for Community Question Answering competition. In order to do that, a set of learning to rank methods was investigated to select an appropriate method. The selected method was optimized on training data by using a search strategy. After optimizi...

Journal: :Computers & OR 2005
Ying-Ming Wang Jian-Bo Yang Dong-Ling Xu

In this paper, a preference aggregation method is developed for ranking alternative courses of actions by combining preference rankings of alternatives given on individual criteria or by individual decision makers. In the method, preference rankings are viewed as constraints on alternative utilities, which are normalized, and linear programming models are constructed to estimate utility interva...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده برق و کامپیوتر 1389

با رشد روزافزون داده ها (از قبیل متن، صوت و تصویر) نیاز به نمایه گذاری، جستجو، سازمان دهی و دسته بندی خودکار داده ها افزایش یافته است. بیشتر این داده ها، داده های چندرسانه ای، شامل صوت و تصویر هستند. یکی از مهمترین مسائل در سال های اخیر، تشخیص مفاهیم معنایی است. هدف اصلی در تشخیص مفاهیم معنایی تعیین حضور مفهوم معنایی خاصی مانند «خارج ساختمان»، « هواپیما»، »خودرو» و «انسان» در قاب های ویدئویی اس...

ژورنال: :مهندسی مالی و مدیریت اوراق بهادار 0

طراحی و استقرار مدل رتبه بندی اعتباری در نظام بانکی نقش مهمی در بالا بردن کارایی تخصیص منابع به مشتریان هدف دارد. در این تحقیق با هدف تدوین مدلی جهت ارزیابی ریسک اعتباری مشتریان حقوقی بانک از ماشین بردار پشتیبان (svm) و الگوریتم ژنتیک بهره گرفته شده است. بدین منظور، مطالعه­ای بر روی متغیرهای مالی282 شرکت که طی سال­های 1387 تا 1390 از بانک تجارت تسهیلات دریافت کرده­اند، صورت گرفته است. در این پژ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2010
zhenrui peng hong yin

a method based on electrical capacitance tomography (ect) and an improved least squares support vector machine (ls-svm) is proposed for void fraction measurement of oil-gas two-phase flow. in the modeling stage, to solve the two problems in ls-svm, pruning skills are employed to make ls-svm sparse and robust; then the real-coded genetic algorithm is introduced to solve the difficult problem of ...

2004
Yi Fang Nir Piterman Amir Pnueli Lenore D. Zuck

The methods of Invisible Invariants and Invisible Ranking were developed originally in order to verify temporal properties of parameterized systems in a fully automatic manner. These methods are based on an instantiate-projectand-generalize heuristic for the automatic generation of auxiliary constructs and a small model property implying that it is sufficient to check validity of a deductive ru...

2016
Chuanqi Tan Furu Wei Li Dong Weifeng Lv Ming Zhou

Chinese character riddle is a riddle game in which the riddle solution is a single Chinese character. It is closely connected with the shape, pronunciation or meaning of Chinese characters. The riddle description (sentence) is usually composed of phrases with rich linguistic phenomena (such as pun, simile, and metaphor), which are associated to different parts (namely radicals) of the solution ...

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