281,189 research outputs found
Privacy-Preserving Graph Machine Learning from Data to Computation: A Survey
In graph machine learning, data collection, sharing, and analysis often
involve multiple parties, each of which may require varying levels of data
security and privacy. To this end, preserving privacy is of great importance in
protecting sensitive information. In the era of big data, the relationships
among data entities have become unprecedentedly complex, and more applications
utilize advanced data structures (i.e., graphs) that can support network
structures and relevant attribute information. To date, many graph-based AI
models have been proposed (e.g., graph neural networks) for various domain
tasks, like computer vision and natural language processing. In this paper, we
focus on reviewing privacy-preserving techniques of graph machine learning. We
systematically review related works from the data to the computational aspects.
We first review methods for generating privacy-preserving graph data. Then we
describe methods for transmitting privacy-preserved information (e.g., graph
model parameters) to realize the optimization-based computation when data
sharing among multiple parties is risky or impossible. In addition to
discussing relevant theoretical methodology and software tools, we also discuss
current challenges and highlight several possible future research opportunities
for privacy-preserving graph machine learning. Finally, we envision a unified
and comprehensive secure graph machine learning system.Comment: Accepted by SIGKDD Explorations 2023, Volume 25, Issue
Tunable fluidic lenses with high dioptric power
We report a complete theoretical model and supporting experimental results on the fabrication and characterization of macroscopic adaptive fluidic lenses with high dioptric power,tunablefocaldistance,andapertureshape. Thelensis17mmwideandismadeofan elastic polydimethylsiloxane (PDMS) polymer, which can adaptively restore accommodation distance within several cm according to the fluidic volume mechanically pumpedin. Moreover, the lens can provide for magnification in the range of +25 diopter to +100 diopter with optical aberrations within a fraction of a wavelength, and overall lens weight of less than 2 g. The agreement between the non-linear theoretical model describing the elastic membrane deformation and the experimental results is apparent. We stress that these features make the proposed lenses appropriate for the low vision segment,as well as for applications in videomagnifiers,camera zooms,telescope and microscopes objectives,andother machine vision applications where large magnification is required.Fil: Osamu Takayama. Technical University of Denmark; DinamarcaFil: Minotti, Fernando Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física del Plasma. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física del Plasma; ArgentinaFil: Puentes, Graciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentin
A graph-based mathematical morphology reader
This survey paper aims at providing a "literary" anthology of mathematical
morphology on graphs. It describes in the English language many ideas stemming
from a large number of different papers, hence providing a unified view of an
active and diverse field of research
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