Results 31 to 40 of about 1,715,429 (285)

Unsupervised Machine Learning for Unbiased Chemical Classification in X-ray Absorption Spectroscopy and X-ray Emission Spectroscopy [PDF]

open access: yes, 2021
We report a comprehensive computational study of unsupervised machine learning for extraction of chemically relevant information in X-ray absorption near edge structure (XANES) and in valence-to-core X-ray emission spectra (VtC-XES) for classification of
Samantha, Tetef   +2 more
core   +2 more sources

CBARS: cluster based classification for activity recognition systems [PDF]

open access: yes, 2012
Activity recognition focuses on inferring current user activities by leveraging sensory data available on today’s sensor rich environment. Supervised learning has been applied pervasively for activity recognition.
Gaber, Mohamed Medhat   +11 more
core   +1 more source

Automatic large-scale classification of bird sounds is strongly improved by unsupervised feature learning [PDF]

open access: yes, 2014
Automatic species classification of birds from their sound is a computational tool of increasing importance in ecology, conservation monitoring and vocal communication studies.
Plumbley, Mark D.   +6 more
core   +2 more sources

ACCURACY OF UNSUPERVISED CLASSIFICATION TO DETERMINE CORAL HEALTH USING SPOT-6 AND SENTINEL-2A [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Characteristics of corals spectral from different species are expected to have optically different characters. The aims of this research are to compare unsupervised classification between IsoData and K-Means methods with Lyzenga application, and to ...
N. Nurdin   +7 more
doaj   +1 more source

Unsupervised classification of variable stars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
Accepted in November ...
Valenzuela, Lucas   +1 more
openaire   +3 more sources

Comparison Between Supervised and Unsupervised Classifications of Neuronal Cell Types: A Case Study [PDF]

open access: yes, 2010
In the study of neural circuits, it becomes essential to discern the different neuronal cell types that build the circuit. Traditionally, neuronal cell types have been classified using qualitative descriptors.
Laura M. McGarry   +11 more
core   +1 more source

Unsupervised Spatial-Spectral CNN-Based Feature Learning for Hyperspectral Image Classification

open access: yes, 2022
The rapid development of remote sensing sensors makes the acquisition, analysis, and application of hyperspectral images (HSIs) more and more extensive.
Jia, Sen   +3 more
core   +1 more source

Unsupervised PolSAR Image Classification Based on Superpixel Pseudo-Labels and a Similarity-Matching Network

open access: yesRemote Sensing
Supervised polarimetric synthetic aperture radar (PolSAR) image classification demands a large amount of precisely labeled data. However, such data are difficult to obtain.
Lei Wang   +4 more
doaj   +1 more source

Multi-sensor remote sensing information fusion for urban area classification and change detection [PDF]

open access: yes, 2011
Information extraction from multi-sensor remote sensing imagery is an important and challenging task for many applications such as urban area mapping and change detection. A special acquisition (orthogonal) geometry is of great importance for optical and
Palubinskas, Gintautas   +5 more
core   +1 more source

Collocation Classification with Unsupervised Relation Vectors [PDF]

open access: yesProceedings of the 57th Annual Meeting of the Association for Computational Linguistics, 2019
Lexical relation classification is the task of predicting whether a certain relation holds between a given pair of words. In this paper, we explore to which extent the current distributional landscape based on word embeddings provides a suitable basis for classification of collocations, i.e., pairs of words between which idiosyncratic lexical relations
Luis Espinosa Anke   +2 more
openaire   +3 more sources

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