Results 21 to 30 of about 95,703 (260)

Unsupervised Spoken Utterance Classification

open access: yesCoRR, 2021
An intelligent virtual assistant (IVA) enables effortless conversations in call routing through spoken utterance classification (SUC) which is a special form of spoken language understanding (SLU). Building a SUC system requires a large amount of supervised in-domain data that is not always available.
Shahab Jalalvand, Srinivas Bangalore
openaire   +3 more sources

Optimization of Remote Sensing Image Attributes to Improve Classification Accuracy

open access: yesInternational Journal of Environment and Geoinformatics, 2019
Remote sensing technologies provide very important big data to various science areas such as risk identification, damage detection and prevention studies.
Uğur Avdan
doaj   +1 more source

Semisupervised Center Loss for Remote Sensing Image Scene Classification

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
High-resolution remote sensing image scene classification is a scene-level classification task. Driven by a wide range of applications, accurate scene annotation has become a hot and challenging research topic.
Jun Zhang   +3 more
doaj   +1 more source

A COMPARATIVE STUDY OF ADVANCED LAND USE/LAND COVER CLASSIFICATION ALGORITHMS USING SENTINEL-2 DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Land Use/ Land Cover (LU/LC) is a major driving phenomenon of distributed ecosystems and its functioning. Interpretation of remote sensor data acquired from satellites requires enhancement through classification in order to attain better results ...
K. Nivedita Priyadarshini   +3 more
doaj   +1 more source

Unsupervised Exemplar-Based Learning for Improved Document Image Classification

open access: yesIEEE Access, 2019
Many recent state-of-the-art approaches for document image classification are based on supervised feature learning that requires a large amount of labeled training data.
Sherif Abuelwafa   +2 more
doaj   +1 more source

Supervised and Unsupervised Neural Approaches to Text Readability

open access: yesComputational Linguistics, 2021
We present a set of novel neural supervised and unsupervised approaches for determining the readability of documents. In the unsupervised setting, we leverage neural language models, whereas in the supervised setting, three different neural ...
Matej Martinc   +2 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

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 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

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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