نتایج جستجو برای: qda

تعداد نتایج: 349  

Abstract Emotions play a powerful and significant role in human beings everyday life. They motivate us, impact our beliefs and decision making and would affect some cognitive processes like creativity, attention, and memory. Nowadays the use of emotion in computers is an increasingly in vogue field. In many ways emotions are one of the last and least explored frontiers of intuitive human-comput...

2011
Gabin Gninkoun Mohammad Soleymani

In this working note, we propose a set of features and a classification scheme for detecting automatically violent scenes in movies. The features are extracted from audio, video, and subtitles modalities of the movies. In violent scenes classification, we found the following features relevant: the short time audio energy, motion component, and shot words rate. We classified the shots into viole...

Journal: :Spanish Journal of Agricultural Research 2021

Aim of study: A portable VIS/NIR spectrometer and chemometric techniques were combined to identify bitter pit (BP) in Golden apples.Area WorldwideMaterial methods: Three different classification algorithms – linear discriminant analysis (LDA), quadratic (QDA) support-vector machine (SVM) –were used two experiments. In experiment #1, measurements carried out at postharvest on apples previously c...

Journal: :Chemometrics and Intelligent Laboratory Systems 2021

Quadratic discriminant analysis (QDA) is a widely used classification technique. Based on training dataset, each class in the data characterized by an estimate of its center and shape, which can then be to assign unseen observations one classes. The traditional QDA rule relies empirical mean covariance matrix. Unfortunately, these estimators are sensitive label measurement noise often impairs m...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده معدن 1392

از آنجا که اکثر ذخایر مس ایران از نوع پورفیری می باشند، اکتشاف بهینه کانسارهای پورفیری در ایران اهمیت بالایی دارد. در اکتشاف این تیپ کانسارها برداشت های ژئوفیزیکی و زمین شناسی اطلاعات مفیدی جهت تعیین محل کانی سازی، جدایش زون پر عیار از زمینه و تعیین مکان گمانه های اکتشافی در اختیار محققان قرار می دهند، اما تحلیل و تفسیر این داده های خام به دلیل پیچیدگی های بسیار، کاری مشکل است. بنابراین به کارگ...

2013
Vladimir Dobrokhotov Alexander Larin Dewayne Sowell

An application of spectral analysis to the transient response signals of ALD-fabricated conductometric sensors (chemiresistors) upon exposure to short vapor pulses is discussed. It is based on the representation of a response curve in the frequency domain, followed by the multi-dimensional Quadratic Discriminant Analysis (QDA) for analyte identification. Compared to the standard steady-state am...

2006
Pieter Vermeesch

[1] The decision boundaries of most tectonic discrimination diagrams are drawn by eye. Discriminant analysis is a statistically more rigorous way to determine the tectonic affinity of oceanic basalts based on their bulk-rock chemistry. This method was applied to a database of 756 oceanic basalts of known tectonic affinity (ocean island, mid-ocean ridge, or island arc). For each of these trainin...

Journal: :Jurnal Teknologi Pertanian (Fakultas Teknologi Pertanian Universitas Brawijaya) 2023

Daun karamunting (Melastoma malabathricum. L) dalam bentuk teh (Tisane) dipreparasi sebagai minuman merupakan salah satu upaya menangani diabetes oleh masyarakat di Kalimantan Barat. Tujuan dari penelitian ini adalah memetakan profil sensori daun dan atribut yang berpotensi menurunkan tingkat kesukaan dengan metode sensometrik. Teh diminati konsumen tidak terlalu bitter kurang astringency. Meto...

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