Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 47 for “"NMF"”.
-
Sequentially-fit alternating least squares algorithms in nonnegative matrix factorization
Nonnegative matrix factorization (NMF) and nonnegative least squares regression (NNLS regression) are widely used in the physical sciences; this thesis explores the often-overlooked origins of NMF in the psychometrics literature. Another method originating in psychometrics is sequentially-fit …
-
The development of neuromuscular fatigue throughout constant power output cycling below, at, and above the maximal lactate steady state in young and healthy females and males
… neuromuscular fatigue development (NMF) is a transient phenomenon in which its etiology, amplitude (i.e., pre- to post-exercise changes) and time course (i.e., changes during the exercise bout) are directly affected by exercise intensity and sex of the population. It has been …
-
End-to-end non-negative auto-encoders: a deep neural alternative to non-negative audio modeling
… last decade, non-negative matrix factorization (NMF) has emerged as one of the most popular approaches to modeling audio signals. NMF allows us to factorize the magnitude spectrogram to learn representative spectral bases that can be used for a wide range of applications. With the recent advances …
-
Uma investigação sobre métodos de separação cega de fontes sonoras envolvendo representações não-negativas e diversidade espacial
… This work studies two different algorithms: NMF-SCM (sound source separation using non-negative matrix factorization and direction-of-arrival-based spatial covariance model), whose model represents the state of the art, taking in consideration not only the characteristics of the sources but …
-
Adaptive Non-negative Least Squares with Applications to Non-Negative Matrix Factorization
… and the nonnegative matrix factorization (NMF) problem. In this paper, a method to solve the NNLS problem in an adaptive way is discussed. Additionally, possible ways to apply this, and other related method, to adaptive NMF problems are discussed.
-
Optimization algorithms for inference and classification of genetic profiles from undersampled measurements
… deterministic Non-negative Matrix Factorization (NMF) framework to the probabilistic case (PNMF). We apply the PNMF algorithm to cluster and classify DNA microarrays data. The proposed PNMF is shown to outperform the deterministic NMF and the sparse NMF algorithms in clustering stability and …
-
Nanomicelles And Liposomes For Improving Drug Delivery of Small Molecules And siRNA Therapeutic Agents
… clear, tacrolimus nanomicellar formulation (TAC-NMF) for AMD. The optimized formulation had a mean diameter of 15.41 nm, zeta potential of 0.5 mV and an entrapment efficiency of 97.13%. In vitro cytotoxicity studies revealed dose-dependent cytotoxicity of TAC-NMF on human retinal pigment …
-
Advances in nonnegative matrix factorization with application on data clustering.
… data, based nonnegative matrix factorization (NMF) framework, for better clustering. Specifically, there are three methods as follows: - Multiple Components Based Representation Learning Real data are usually complex and contain various components. For example, face images have expressions and …
-
Data Clustering And Visualization Through Matrix Factorization
… Non-negative Matrix Factorization (SS-NMF) for data clustering/co-clustering and Exemplar-based data Visualization (EV) through matrix factorization. Compared to traditional data mining models,</p> <p>matrix-based methods are fast, easy to understand and implement, especially suitable …
-
An investigation of the utility of monaural sound source separation via nonnegative matrix factorization applied to acoustic echo and reverberation mitigation for hands-free telephony
… (MSSS) via Nonnegative Matrix Factorization (NMF) for various problems related to audio for hands-free telephony. We first investigate MSSS via NMF as an alternative acoustic echo reduction approach to existing approaches such as Acoustic Echo Cancellation (AEC). To this end, we present the …
-
When nasal is more than nasal: the oral articulation of nasal vowels in two dialects of French
… recorded from 11 Northern Metropolitan French (NMF) and two Quebecois French (QF) female speakers in laboratory settings. Using simultaneous acoustic and articulatory information related to the lingual and labial articulations, I investigated how the oral/nasal vowel distinction is manifested …
-
Avaliação do comportamento biomecânico de diferentes sistemas de retentores intrarradiculares
… pinos de fibra de vidro anatômicos indiretos; e NMF- núcleos metálicos fundidos. As raízes foram incluídas em resina de poliestireno para simulação do ligamento periodontal. Após a inclusão, os espécimes foram submetidos a teste de resistência à fratura em máquina de ensaio mecânico. Os dados …
-
Matrix Factorization for Learning Metagenomic Pathways and Species
… are based on Nonnegative Matrix Factorization (NMF). The rows of our data matrix correspond to metagenomic samples and columns correspond to chemical reactions present in the samples. In order to learn both pathways and OTUs as well as relationships between them, we consider ways to factorize …
-
Thermo-analytical and spectroscopic characterisation of pore lining minerals in reservoir rocks.
… formed between both DMF and N-Methylformamide (NMF), and, Mg, Ca, Na and K-montmorillonites have shown that molecules retained at higher temperatures are located in the interlayer space and are associated with exchangeable cations via their carbonyl groups. Two layers of DMF and NMF are present …
-
EMG methods for prosthesis ankle-subtalar free-space control
… to replace non-negative matrix factorization(NMF) for muscle motion base extraction. NOD recovers the source signal by finding the borders of the input signal and translating the borders onto the coordinate axis. The translated signals are the recovered signals. 2. An unsupervised algorithm …
-
Methods for multiple pitch tracking and instrument separation from monaural polyphonic recordings
… Recently non-negative matrix factorization (NMF) and probabilistic latent component analysis (PLCA) have been used by many researchers for the analysis of polyphonic audio. They provide good representations of audio mixtures as sums of individual sources. To solve the multiple instrument …
-
The study of capillary electrophoresis: polyimides, nylon and non-aqueous analysis
… CE (5) by using a mixture of N Methylformamide (NMF) and dimethylsulfoxide (DMSO). First, the application of CZE to polyimide compositional analysis is described. The electropherograms of decomposed products from polyimide are determined by the structure of monomers from which a polyimide is …
-
Algorithms for Discovering Collections of High-Quality and Diverse Solutions, With Applications to Bayesian Non-Negative Matrix Factorization and Reinforcement Learning
… models. Non-negative Matrix Factorization (NMF) is a popular data exploration tool and its Bayesian formulation is a promising approach for understanding uncertainty within this structure. We demonstrate that current approaches are lacking in the proper characterization of uncertainties and …
-
Enhanced Etoposide Solubility and Anticancer Activity using Complexation and Nanotechnology
… crystal, and (iii) nanomicellar formulation (NMF) using D -α-Tocopherol polyethylene glycol 1000 succinate (Vitamin E TPGS ) and solvent evaporation thin-film rehydration technique. All resulting formulations are thoroughly physico-chemically characterized with FT-IR/ 1H-NMR spectroscopies, …
Page 1 of 3