نتایج جستجو برای: تحلیل جداکننده خطی lda

تعداد نتایج: 263455  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود 1390

جداکننده های گرانشی افقی اغلب برای جداکردن نفت خام از آب و سایر ترکیبات موجود در چاه نفت به کار می رود. در این تحقیق شبیه سازی عددی جداکننده های گرانشی به کمک دینامیک سیالات محاسباتی جهت ارزیابی و بهبود راندمان آنها صورت گرفته است. برای تولید هندسه و مش از بسته نرم افزاری gambit 2.4.6 و برای شبیه سازی جریان دوفازی آب و نفت یا آب و چربی از بسته نرم افزار fluent 6.3 استفاده شد. در شبیه سازی از مد...

2012
Stefanie Mömke Marlene Sickinger Jürgen Rehage Klaus Doll Ottmar Distl

Left-sided displacement of the abomasum (LDA) is a common disease in many dairy cattle breeds. A genome-wide screen for QTL for LDA in German Holstein (GH) cows indicated motilin (MLN) as a candidate gene on bovine chromosome 23. Genomic DNA sequence analysis of MLN revealed a total of 32 polymorphisms. All informative polymorphisms used for association analyses in a random sample of 1,136 GH c...

Journal: :International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 2011
Usama M Fouda Ahmed M Sayed Abdel-Megid A Abdou Dalia I Ramadan Iman M Fouda Mahmoud M Zaki

OBJECTIVE To determine whether low molecular weight heparin (LMWH) plus low-dose aspirin (LDA) is comparable in efficacy and safety to unfractionated heparin (UFH) plus LDA in the management of pregnant women with a history of recurrent spontaneous abortion secondary to antiphospholipid syndrome (APS). METHODS In a randomized prospective study, 60 women with a history of 3 or more consecutive...

2009
Yasuo Ariki Takuya Tonaru Tetsuya Takiguchi

The method based on local features has an advantage that the important local motion feature is represented as bag-of-features, but lacks the location information. Additionally, in order to employ an approach based on bag-of-features, language models represented by pLSA and LDA (Latent Dirichlet Allocation) have to be applied to. These are unsupervised learning, but they require the number of la...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Chae Un Kim Mark W Tate Sol M Gruner

Observation of theorized glass-to-liquid transitions between low-density amorphous (LDA) and high-density amorphous (HDA) water states had been stymied by rapid crystallization below the homogeneous water nucleation temperature (∼235 K at 0.1 MPa). We report optical and X-ray observations suggestive of glass-to-liquid transitions in these states. Crack healing, indicative of liquid, occurs when...

Journal: :CoRR 2012
Jia Zeng Zhi-Qiang Liu Xiao-Qin Cao

Latent Dirichlet allocation (LDA) is a widely-used probabilistic topic modeling paradigm, and recently finds many applications in computer vision and computational biology. In this paper, we propose a fast and accurate batch algorithm, active belief propagation (ABP), for training LDA. Usually batch LDA algorithms require repeated scanning of the entire corpus and searching the complete topic s...

Journal: :EURASIP J. Adv. Sig. Proc. 2010
Sung Won Park Marios Savvides

Linear Discriminant Analysis (LDA) and Multilinear Principal Component Analysis (MPCA) are leading subspace methods for achieving dimension reduction based on supervised learning. Both LDA and MPCA use class labels of data samples to calculate subspaces onto which these samples are projected. Furthermore, both methods have been successfully applied to face recognition. Although LDA and MPCA sha...

2006
Ralf Schlüter András Zolnay Hermann Ney

In this paper, Linear Discriminant Analysis (LDA) is investigated with respect to the combination of different acoustic features for automatic speech recognition. It is shown that the combination of acoustic features using LDA does not consistently lead to improvements in word error rate. A detailed analysis of the recognition results on the Verbmobil (VM II) and on the English portion of the E...

2009
Diane J. Hu

Latent Dirichlet Allocation (LDA) is an unsupervised, statistical approach to document modeling that discovers latent semantic topics in large collections of text documents. LDA posits that words carry strong semantic information, and documents discussing similar topics will use a similar group of words. Latent topics are thus discovered by identifying groups of words in the corpus that frequen...

2009
Jinn-Min Yang Pao-Ta Yu

Linear discriminant analysis (LDA) has played an important role for dimension reduction in patter recognition field. Basically, LDA has three deficiencies in dealing with classification problems. First, LDA is well-suited only for normally distributed data. Second, the number of features can be extracted are limited by the rank of between-class scatter matrix. Third, the singularity problem ari...

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