نتایج جستجو برای: basis algorithm frequency content

تعداد نتایج: 1901681  

Journal: :Wasit journal of computer and mathematics science 2023

Content-based filtering is a recommendation algorithm that analyzes user activity and profile data to provide personalized recommendations for content matches user's interests preferences. This widely used by social media platforms, such as Facebook Twitter, increase engagement satisfaction. The methodology of content-based involves creating based on recommending the interests. continually upda...

Journal: :فیزیک زمین و فضا 0
هدی آراسته مؤسسه ژئوفیزیک دانشگاه تهران- کارشناس ارشد عبدالرحیم جواهریان مؤسسه ژئوفیزیک دانشگاه تهران- استاد

one of the most fundamental reservoir characteristics is the thickness. the analysis of thin bed tuning on seismic reflectivity has been studied extensively by wides (1973) and neidel and pogiaggliomi (1977), who discussed the limits of seismic resolution. during the past decade, the industry has developed a plethora of new attributes in studying thin beds by employing spectral decomposition (p...

2007
Morten Nielsen

We consider the problem of recovering a structured sparse representation of a signal in an overcomplete time-frequency dictionary with a particular structure. For infinite dictionaries that are the union of a nice wavelet basis and a Wilson basis, sufficient conditions are given for the Basis Pursuit and (Orthogonal) Matching Pursuit algorithms to recover a structured representation of an admis...

2013
Yousheng Chen Qin Gong

BACKGROUND To increase the signal to noise ratio (SNR) and to suppress directional noise in front-end signal acquisition, microphone array technologies are being applied in the cochlear implant (CI). Due to size constraints, the dual microphone-based system is most suitable for actual application. However, direct application of the array technology will result in the low frequency roll-off prob...

2004
Nader Safavian Shohreh Kasaei

With the rapid establishment of digital libraries and multimedia databases, the need for an efficient search algorithm is also increasing. In this paper, a new approach for content-based image indexing and retrieval is presented. The proposed method is based on a combination of multiresolution analysis and color characteristics of the image. Also, in order to obtain better retrieval results, th...

2005
Albert Gatt Kees van Deemter

This paper explores the role of semantic similarity in content selection and aggregation of expressions referring to sets. Similarity plays a role in ensuring that a referring expression corresponds to a coherent conceptual gestalt. On the basis of corpusbased and experimental evidence we propose an algorithm which (a) separates content selection and aggregation to avoid a combinatorial explosi...

Journal: :فیزیک زمین و فضا 0
مریم خاکی فیروز کارشناس ارشد پردازش داده های لرزه ای، شرکت کدکم حمیدرضا سیاهکوهی دانشیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران

the stolt (f-k) migration algorithm is a direct (i.e. non-recursive) fourier-domain technique based on a change of variables (or equivalently, a mapping) that converts the input spectrum to the output spectrum. the algorithm is simple and efficient but limited to constant velocity. a v(z)(f-k) migration method, capable of very high accuracy for vertical variations of velocity, can be formulated...

2016
Martin Kirchberger Frank A. Russo

A novel algorithm for frequency lowering in music was developed and experimentally tested in hearing-impaired listeners. Harmonic frequency lowering (HFL) combines frequency transposition and frequency compression to preserve the harmonic content of music stimuli. Listeners were asked to make judgments regarding detail and sound quality in music stimuli. Stimuli were presented under different s...

H. Mohammadnezhad, N. Saeednezhad, P. Sotoudeh,

The effect of frequency content on the dynamic response of concrete gravity dams is investigated in this paper. Dams are one of the most complex structures to handle when there is dynamic analysis involved. One of the influential parameters on these structureschr('39') seismic response is the frequency content of the earthquakes. An index to represent frequency content, which represents frequen...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید