1,931,638 Hits in 4.7 sec

Frame-based Data Factorizations

Sebastian Mair, Ahcène Boubekki, Ulf Brefeld
2017 International Conference on Machine Learning  
Every data point is represented as a convex combination of factors, i.e., points on the boundary of the convex hull of the data. This renders computation inefficient.  ...  Archetypal Analysis is the method of choice to compute interpretable matrix factorizations.  ...  An archetype-based factorization yields two stochastic matrices and naturally interpretable factors for arbitrary data matrices.  ... 
dblp:conf/icml/MairBB17 fatcat:5v7sa3hmljas7mhmk3erwgt36i

Improved Key Frame Extraction using Discrete Wavelet Transform with Modified Threshold Factor

Hussein Ali Aldelfy, Mahmood Hamza Al-Mufraji, Thamir R. Saeed
2018 TELKOMNIKA (Telecommunication Computing Electronics and Control)  
By using key frames reducing the amount of memory needed for video data processing and complexity greatly.  ...  The results for different wavelet b asis db , sym and coif show the b est result for numb ers of key frames at the threshold factor value (0.75).  ...  Annotation is to attach data to some other piece of data [14] .  ... 
doi:10.12928/telkomnika.v16i2.7692 fatcat:mrj5xb2lsrgc3otvgmctjzetsq

Model-based normalization for iterative 3D PET image reconstruction

B Bai, Q Li, C H Holdsworth, E Asma, Y C Tai, A Chatziioannou, R M Leahy
2002 Physics in Medicine and Biology  
We then compute block-wise and block-profile deadtime correction factors using singles and coincidence data, respectively, from a multiframe cylindrical source.  ...  We describe a maximum likelihood approach to joint estimation of the count-rate independent normalization factors, which we apply to data from a uniform cylindrical source.  ...  In figures 5 and 6 we show the effects of applying the model-based and direct normalization factors to the high-and low-count frame data from the phantom.  ... 
doi:10.1088/0031-9155/47/15/316 pmid:12200938 fatcat:sa6jb4liqrgnfjds7vfo67n2pq

Page 439 of American Society of Civil Engineers. Collected Journals Vol. 125, Issue 4 [page]

1999 American Society of Civil Engineers. Collected Journals  
Using data from the most severe earthquake simulation test, the strength factor was cal- culated to be equal to the maximum base shear force (V,) divided by the design base shear force (V,) at the strength  ...  Base shear-roof displacement relationships of the type shown in Fig. 1 were established using data acquired from the earthquake simulator testing of two code-compliant dual steel framing systems, one concentrically  ... 

Evaluation of Response Reduction Factor For Flat Slab Structures

Nishant S. Borse, Vijaykumar P. Bhusare
2018 Journal of Advances and Scholarly Researches in Allied Education  
low design base shear and special moment resisting frame (SMRF) having response reduction factor 5 for high design base shear.  ...  According to Indian Standards while designing any earthquake resisting structure we consider two moment resisting frames i.e. ordinary moment resisting frame (OMRF) having response reduction factor 3 for  ...  Design data Total numbers of models are seven created in STAAD.Pro having different response reduction factor for flat slab structure and frame structure.  ... 
doi:10.29070/15/56845 fatcat:tlwskg2ztvh5ljh5ljez3zxm2y

Selection Bias in Population-Based Cancer Case-Control Studies Due to Incomplete Sampling Frame Coverage

M. C. Walsh, A. Trentham-Dietz, R. E. Gangnon, F. J. Nieto, P. A. Newcomb, M. Palta
2012 Cancer Epidemiology, Biomarkers and Prevention  
If opt out is also related to risk factors, bias can arise.  ...  Increasing numbers of individuals are choosing to opt out of population-based sampling frames due to privacy concerns.  ...  Bias will arise if sampling frame coverage of the study base is associated differently with risk factors among cases and controls.  ... 
doi:10.1158/1055-9965.epi-11-1066 pmid:22490319 pmcid:PMC3645306 fatcat:rvltvytlz5ev5jvcjlmmuo6kuu

A Novel Singing Voice Separation Method Based on Sparse Non-Negative Matrix Factorization and Low-Rank Modeling

S. Mavaddati
2019 Iranian Journal of Electrical and Electronic Engineering  
data based on the modeled structures of the vocal and musical components. 3) A voice activity detection algorithm is introduced based on the energy of coding coefficients matrix in the training step to  ...  This field of signal processing provides important capability in various areas dealing with singer identification, voice recognition, data retrieval.  ...  Then the similarity between the original frame Y and the reconstructed frame Ŷ achieved based on the sparse factorization over Ws, is calculated.  ... 
doaj:7bb13e894aa5463faf1af08330d208c5 fatcat:tt7survcijexbmt6kygg3cxqlu

FRAMED: Data-Driven Structural Performance Analysis of Community-Designed Bicycle Frames [article]

Lyle Regenwetter, Colin Weaver, Faez Ahmed
2022 arXiv   pre-print
To support our data-driven approach, we also provide a dataset of structural performance values such as weight, displacements under load, and safety factors for all the bicycle frame designs.  ...  We present FRAMED -- a parametric dataset of bicycle frames based on bicycles designed by bicycle practitioners from across the world.  ...  Additionally, points and histograms are organized based on bicycle frame model validity.  ... 
arXiv:2201.10459v1 fatcat:xuqgdbn3qnf5tlvwi6rigetx7a

Generalizing face quality and factor measures to video

Yooyoung Lee, P. Jonathon Phillips, James J. Filliben, J. Ross Beveridge, Hao Zhang
2014 IEEE International Joint Conference on Biometrics  
For video-based face recognition, the analysis shows that distribution-based metrics are generally more effective in quantifying factor values than algorithmdependent metrics.  ...  From our data, we also find that males are easier to identify than females, and Asians easier to identify than Caucasians.  ...  After ranking all frame pairs based on the scores, the frame pair with the highest similarity score [6] is then selected.  ... 
doi:10.1109/btas.2014.6996251 dblp:conf/icb/LeePFBZ14 fatcat:hx4nz4xhsnbdjkugreau5srpm4

MPEG and DA-AD Resilient DCT-Based Video Watermarking Using Adaptive Frame Selection

Jong-Uk Hou
2021 Electronics  
The proposed system ensures that a 16-bit embedded sequence can be extracted through adaptive frame selection in any 15-s interval, even with a long video clip.  ...  To evaluate the performance of the proposed watermarking scheme, we conducted robustness tests under a DA-AD conversion environment, based on the MPEG-4 part 10 (H.264) codec.  ...  The author would like to express special thanks to Jinseok Park, Seung-Hun Nam, and Do-Guk Kim for their assistance with the initial setup of the experiment and the data preprocessing.  ... 
doi:10.3390/electronics10202467 fatcat:ean7mqm56feqpfdlely762jhti


2013 Journal of Computer Science  
Many current indexing techniques fails to extract the needed image from the stored data set, based on the users query.  ...  Here a new matrix based indexing technique for image retrieval has been proposed. The proposed method provide better result, experimental results prove this.  ...  Various factors are considered based on the application .To Retrieve the image from the stored data based is the current active research area, retrieve the image depends on various factors.  ... 
doi:10.3844/jcssp.2013.534.542 fatcat:wnzj5cynkred3p54fk5s5remsu

Multiphase Energetic Experiments: Application of Multiple Object Tracking

Sarah Davis Finch
2021 Journal of Purdue Undergraduate Research  
Th ese test cases would isolate a few of the inaccuracies of real data and allow the researchers to determine what factor of said data is the most detrimental to the object-tracking process.  ...  Due to the large quantity of factors at play, Cotter's method was used to analyze the signifi cance of each factor.  ...  Th e available data when reduced is signifi cantly larger than the base percentage, which means this factor impacts the data to a large degree.  ... 
doi:10.7771/2158-4052.1487 fatcat:tbhrypsfwvbz7mjyir3inj3wny

Breakpoint Tuning in DCT-Based Nonlinear Layered Video Codecs

Pedro Cuenca, Luis Orozco-Barbosa, Francisco Delicado, Antonio Garrido
2004 EURASIP Journal on Advances in Signal Processing  
In this paper, we study a frame-aware nonlinear layering scheme for the transport of a DCT-based video over packet-switched networks.  ...  study over a large set of video streams, we show that by properly tuning the encoding parameters, it is feasible to gracefully degrade or even maintain the video quality while reducing the amount of data  ...  to the breakpoint to be used to encode the P-and B-frames; (iv) the factor to apply to the P-frames should be larger than the factor to be used for the B-frames.  ... 
doi:10.1155/s1110865704404156 fatcat:qyxijgimpjferpfcbvstfy724a

Indexing techniques for wireless data broadcast under data clustering and scheduling

Quinglong Hu, Wang-Chien Lee, Dik Lun Lee
1999 Proceedings of the eighth international conference on Information and knowledge management - CIKM '99  
Different from previous studies, our research takes into consideration two important data organization factors, namely, clustering and scheduling.  ...  Cost models for index, signature and hybrid methods are derived by taking into account various data organizations accommodating these two factors.  ...  Data organizations on broadcast channels have great impacts on data access efficiency and power consumption. Data frames can be clustered based on attributes.  ... 
doi:10.1145/319950.320027 dblp:conf/cikm/HuLL99 fatcat:r62orbsqfra6phocooyarlfm5y

Detection of Edges from Nonuniform Fourier Data

Anne Gelb, Taylor Hines
2011 Journal of Fourier Analysis and Applications  
MRI) where the data is given in this way, however.  ...  The technique employs the use of Fourier frames. Numerical examples are provided. 1991 Mathematics Subject Classification. 42C15; 42A50; 65T40.  ...  We will refer to (30) as the frame-theoretic edge detection method or the frame based concentration factor method.  ... 
doi:10.1007/s00041-011-9172-7 fatcat:bqjsrcx37bcvjna3vsrshtzese
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