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Towards toric absolute factorization [PDF]

open access: yesJournal of Symbolic Computation, 2009
This article gives an algorithm to recover the absolute factorization of a bivariate polynomial, taking into account the geometry of its monomials. It is based on algebraic criterions inherited from algebraic interpolation and toric geometry.
Elkadi, M, Galligo, A, Weimann, M
openaire   +9 more sources

MJNMF-GAT: Multi-Task Joint Non-Negative Matrix Factorization Graph Attention Network for Understanding Adolescent Neurodevelopment [PDF]

open access: yesIEEE Access
Integration of multi-task brain imaging data is crucial for furthering our understanding of neurodevelopment. By utilizing functional magnetic resonance imaging (fMRI) data and machine learning methods such as graph neural networks to measure brain ...
Binish Patel   +4 more
doaj   +2 more sources

Discrete matrix factorization cross-modal hashing with multi-similarity consistency

open access: yesComplex & Intelligent Systems, 2022
Recently, matrix factorization-based hashing has gained wide attention because of its strong subspace learning ability and high search efficiency. However, some problems need to be further addressed.
Yiru Li   +6 more
doaj   +1 more source

Recommendation System Algorithms on Location-Based Social Networks: Comparative Study

open access: yesInformation, 2022
Currently, social networks allow individuals from all over the world to share ideas, activities, events, and interests over the Internet. Using location-based social networks (LBSNs), users can share their locations and location-related content ...
Abeer Al-Nafjan   +2 more
doaj   +1 more source

Sparse Non-negative Matrix Factorization Algorithm Based on Proximal Alternating Linearized Minimization [PDF]

open access: yesJisuanji gongcheng, 2019
This paper combinessparsity constraint and Proximal Alternating Linearized Minimization(PALM),proposes a Sparse Non-negative Matrix Factorization(SNMF) algorithm,called SNMF_PALM.The non-convex Smoothly Clipped Absolute Deviation(SCAD) function is used ...
WANG Jing,YANG Dan
doaj   +1 more source

IT-PMF: A Novel Community E-Commerce Recommendation Method Based on Implicit Trust

open access: yesMathematics, 2022
It is well-known that data sparsity and cold start are two of the open problems in recommendation system research. Numerous studies have been dedicated to dealing with those two problems.
Jun Wu   +7 more
doaj   +1 more source

Correlation and realization of quasi-Newton methods of absolute optimization [PDF]

open access: yesКомпьютерные исследования и моделирование, 2016
Newton and quasi-Newton methods of absolute optimization based on Cholesky factorization with adaptive step and finite difference approximation of the first and the second derivatives.
Anastasiya Borisovna Sviridenko   +1 more
doaj   +1 more source

Three-Dimensional Absolute Attitude Reconstruction of a Rigid Body Based on Multi-Station HRRP Sequences

open access: yesIEEE Access, 2020
This study proposes a three-dimensional (3-D) absolute attitude reconstruction algorithm of a rigid body target based on multi-station high-resolution range profile (HRRP) sequences.
Nan Su   +3 more
doaj   +1 more source

Missing Data Imputation in GNSS Monitoring Time Series Using Temporal and Spatial Hankel Matrix Factorization

open access: yesRemote Sensing, 2022
GNSS time series for static reference stations record the deformation of monitored targets. However, missing data are very common in GNSS monitoring time series because of receiver crashes, power failures, etc.
Hanlin Liu, Linchao Li
doaj   +1 more source

Research on PMF Model Based on BP Neural Network Ensemble Learning Bagging and Fuzzy Clustering

open access: yesComplexity, 2021
Probability matrix factorization model can be used to solve the problem of high-dimensional sparsity of user and rating data in the recommender systems.
Zhengjin Zhang   +6 more
doaj   +1 more source

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