Results 11 to 20 of about 307,372 (292)

Repeated median and hybrid filters [PDF]

open access: yesComputational Statistics & Data Analysis, 2006
Standard median filters preserve abrupt shifts (edges) and remove impulsive noise (outliers) from a constant signal but they deteriorate in trend periods. FIR median hybrid (FMH) filters are more flexible and also preserve shifts, but they are much more vulnerable to outliers.
Roland Fried   +2 more
openaire   +4 more sources

A Hybrid Action-Related K-Nearest Neighbour (HAR-KNN) Approach for Recommendation Systems

open access: yesIEEE Access, 2020
Recommendation System (RS) has been broadly utilized in various areas and discovers product recommendations during an active user interaction in E-Commerce sites.
Sunkuru Gopal Krishna Patro   +6 more
doaj   +1 more source

Double hybrid Kalman filtering for state estimation of dynamical systems [PDF]

open access: yesITM Web of Conferences, 2019
In this paper authors present a new approaches to the hybrid Kalman filtering and modified hybrid Kalman filtering, with the changed order of methods inside (Unscented Kalman Filter and Extended Kalman Filter).
Michalski Jacek   +2 more
doaj   +1 more source

Optimized Anisotropic Rotational Invariant Diffusion Scheme on Cone-Beam CT [PDF]

open access: yes, 2010
Cone-beam computed tomography (CBCT) is an important image modality for dental surgery planning, with high resolution images at a relative low radiation dose.
Kroon, Dirk-Jan   +2 more
core   +2 more sources

Hybrid metasurfaces for simultaneous focusing and filtering

open access: yesOptics Letters, 2021
This work presents the design and fabrication of polymeric, structural optical filters that simultaneously focus light. These filters represent a novel, to the best of our knowledge, design at the boundary between diffractive optics and metasurfaces that may provide significant advantages for both digital and hyperspectral imaging.
Mansoor A. Sultan   +3 more
openaire   +3 more sources

Evolution of recommender paradigm optimization over time

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
In the past few decades recommender system has reshaped the way of information filtering between websites and the users. It helps in identifying user interest and generates product suggestions for the active users.
Bam Bahadur Sinha, R. Dhanalakshmi
doaj   +1 more source

A New Hybrid Filter Approach for Image Processing

open access: yesSakarya University Journal of Computer and Information Sciences, 2020
Today, with the rapidly advancing technology, the importance of image processing techniques is increasing. Image processing is used in many areas from facial recognition to plant disease identification. One of the important image processing stages is the
Osamah Khaled Musleh Salman, Bekir Aksoy
doaj   +1 more source

An Improved Dynamic Collaborative Filtering Algorithm Based on LDA

open access: yesIEEE Access, 2021
Currently, available collaborative filtering (CF) algorithms often utilize user behavior data to generate recommendations. The similarity calculation between users is mostly based on the scores, without considering the explicit attributes of the users ...
Meng Di-Fei   +3 more
doaj   +1 more source

Hybrid Coding and Filtering Technique for Optical IM-DD Link With Robustness to Multipath Interference and Bandwidth Limitation

open access: yesIEEE Photonics Journal, 2021
In this work, a hybrid code division multiplexing (CDM) coding and digital filtering method for optical intensity modulation and direct detection (IM-DD) link is investigated to address multipath interference (MPI) and channel bandwidth limitation.
Lin Sun   +5 more
doaj   +1 more source

Wideband Circularly Polarized Filtering Hybrid Antenna

open access: yesApplied Sciences, 2022
In this paper, a wideband circularly polarized (CP) filtering hybrid antenna is presented. The liquid dielectric resonator (DR) is excited by a microstrip-coupled cross-slot to generate CP radiation. Four inverted L-shaped strips are loaded on the ground
Yahui Qian, Shumin Xie
doaj   +1 more source

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