<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-06-02T06:36:43Z</responseDate><request verb="GetRecord" identifier="oai:riubu.ubu.es:10259/7233" metadataPrefix="mets">https://riubu.ubu.es/oai/request</request><GetRecord><record><header><identifier>oai:riubu.ubu.es:10259/7233</identifier><datestamp>2023-02-16T12:37:58Z</datestamp><setSpec>com_10259_3847</setSpec><setSpec>com_10259_5086</setSpec><setSpec>com_10259_2604</setSpec><setSpec>col_10259_3848</setSpec></header><metadata><mets xmlns="http://www.loc.gov/METS/" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd" PROFILE="DSpace METS SIP Profile 1.0" TYPE="DSpace ITEM" ID="&#xa;&#x9;&#x9;&#x9;&#x9;DSpace_ITEM_10259-7233" OBJID="&#xa;&#x9;&#x9;&#x9;&#x9;hdl:10259/7233">
<metsHdr CREATEDATE="2026-06-02T08:36:43Z">
<agent TYPE="ORGANIZATION" ROLE="CUSTODIAN">
<name>Repositorio Institucional de la Universidad de Burgos</name>
</agent>
</metsHdr>
<dmdSec ID="DMD_10259_7233">
<mdWrap MDTYPE="MODS">
<xmlData xmlns:mods="http://www.loc.gov/mods/v3" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
<mods:mods xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-1.xsd">
<mods:name>
<mods:role>
<mods:roleTerm type="text">author</mods:roleTerm>
</mods:role>
<mods:namePart>González Enrique, Francisco Javier</mods:namePart>
</mods:name>
<mods:name>
<mods:role>
<mods:roleTerm type="text">author</mods:roleTerm>
</mods:role>
<mods:namePart>Ruiz Aguilar, Juan Jesús</mods:namePart>
</mods:name>
<mods:name>
<mods:role>
<mods:roleTerm type="text">author</mods:roleTerm>
</mods:role>
<mods:namePart>Moscoso López, José Antonio</mods:namePart>
</mods:name>
<mods:name>
<mods:role>
<mods:roleTerm type="text">author</mods:roleTerm>
</mods:role>
<mods:namePart>Urda Muñoz, Daniel</mods:namePart>
</mods:name>
<mods:name>
<mods:role>
<mods:roleTerm type="text">author</mods:roleTerm>
</mods:role>
<mods:namePart>Deka, Lipika</mods:namePart>
</mods:name>
<mods:name>
<mods:role>
<mods:roleTerm type="text">author</mods:roleTerm>
</mods:role>
<mods:namePart>Turias Domínguez, Ignacio J.</mods:namePart>
</mods:name>
<mods:extension>
<mods:dateAccessioned encoding="iso8601">2023-01-12T13:16:54Z</mods:dateAccessioned>
</mods:extension>
<mods:extension>
<mods:dateAvailable encoding="iso8601">2023-01-12T13:16:54Z</mods:dateAvailable>
</mods:extension>
<mods:originInfo>
<mods:dateIssued encoding="iso8601">2021-03</mods:dateIssued>
</mods:originInfo>
<mods:identifier type="uri">http://hdl.handle.net/10259/7233</mods:identifier>
<mods:identifier type="doi">10.3390/s21051770</mods:identifier>
<mods:identifier type="essn">1424-8220</mods:identifier>
<mods:abstract>This study aims to produce accurate predictions of the NO2 concentrations at a specific&#xd;
station of a monitoring network located in the Bay of Algeciras (Spain). Artificial neural networks&#xd;
(ANNs) and sequence-to-sequence long short-term memory networks (LSTMs) were used to create&#xd;
the forecasting models. Additionally, a new prediction method was proposed combining LSTMs&#xd;
using a rolling window scheme with a cross-validation procedure for time series (LSTM-CVT). Two&#xd;
different strategies were followed regarding the input variables: using NO2&#xd;
from the station or&#xd;
employing NO2 and other pollutants data from any station of the network plus meteorological&#xd;
variables. The ANN and LSTM-CVT exogenous models used lagged datasets of different window&#xd;
sizes. Several feature ranking methods were used to select the top lagged variables and include them&#xd;
in the final exogenous datasets. Prediction horizons of t + 1, t + 4 and t + 8 were employed. The&#xd;
exogenous variables inclusion enhanced the model’s performance, especially for t + 4 (ρ ≈ 0.68 to&#xd;
ρ ≈ 0.74) and t + 8 (ρ ≈ 0.59 to ρ ≈ 0.66). The proposed LSTM-CVT method delivered promising&#xd;
results as the best performing models per prediction horizon employed this new methodology.&#xd;
Additionally, per each parameter combination, it obtained lower error values than ANNs in 85% of&#xd;
the cases.</mods:abstract>
<mods:language>
<mods:languageTerm authority="rfc3066">eng</mods:languageTerm>
</mods:language>
<mods:accessCondition type="useAndReproduction">Atribución 4.0 Internacional</mods:accessCondition>
<mods:subject>
<mods:topic>Forecasting</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Feature selection</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Air pollution</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Nitrogen dioxide</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Artificial neural networks</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>LSTMs</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Exogenous variables</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Deep learning</mods:topic>
</mods:subject>
<mods:subject>
<mods:topic>Time series</mods:topic>
</mods:subject>
<mods:titleInfo>
<mods:title>Artificial Neural Networks, Sequence-to-Sequence LSTMs, and Exogenous Variables as Analytical Tools for NO2 (Air Pollution) Forecasting: A Case Study in the Bay of Algeciras (Spain)</mods:title>
</mods:titleInfo>
<mods:genre>info:eu-repo/semantics/article</mods:genre>
</mods:mods>
</xmlData>
</mdWrap>
</dmdSec>
<amdSec ID="TMD_10259_7233">
<rightsMD ID="RIG_10259_7233">
<mdWrap OTHERMDTYPE="DSpaceDepositLicense" MDTYPE="OTHER" MIMETYPE="text/plain">
<binData>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</binData>
</mdWrap>
</rightsMD>
</amdSec>
<amdSec ID="FO_10259_7233_1">
<techMD ID="TECH_O_10259_7233_1">
<mdWrap MDTYPE="PREMIS">
<xmlData xmlns:premis="http://www.loc.gov/standards/premis" xsi:schemaLocation="http://www.loc.gov/standards/premis http://www.loc.gov/standards/premis/PREMIS-v1-0.xsd">
<premis:premis>
<premis:object>
<premis:objectIdentifier>
<premis:objectIdentifierType>URL</premis:objectIdentifierType>
<premis:objectIdentifierValue>https://riubu.ubu.es/bitstream/10259/7233/1/Urda-sensors_2021.pdf</premis:objectIdentifierValue>
</premis:objectIdentifier>
<premis:objectCategory>File</premis:objectCategory>
<premis:objectCharacteristics>
<premis:fixity>
<premis:messageDigestAlgorithm>MD5</premis:messageDigestAlgorithm>
<premis:messageDigest>d83e40bfad5047df5e5f83fde24ff4dd</premis:messageDigest>
</premis:fixity>
<premis:size>4875038</premis:size>
<premis:format>
<premis:formatDesignation>
<premis:formatName>application/pdf</premis:formatName>
</premis:formatDesignation>
</premis:format>
</premis:objectCharacteristics>
<premis:originalName>Urda-sensors_2021.pdf</premis:originalName>
</premis:object>
</premis:premis>
</xmlData>
</mdWrap>
</techMD>
</amdSec>
<fileSec>
<fileGrp USE="ORIGINAL">
<file ID="BITSTREAM_ORIGINAL_10259_7233_1" MIMETYPE="application/pdf" SEQ="1" SIZE="4875038" CHECKSUM="d83e40bfad5047df5e5f83fde24ff4dd" CHECKSUMTYPE="MD5" ADMID="FO_10259_7233_1" GROUPID="GROUP_BITSTREAM_10259_7233_1">
<FLocat xlink:type="simple" LOCTYPE="URL" xlink:href="https://riubu.ubu.es/bitstream/10259/7233/1/Urda-sensors_2021.pdf"/>
</file>
</fileGrp>
</fileSec>
<structMap TYPE="LOGICAL" LABEL="DSpace Object">
<div TYPE="DSpace Object Contents" ADMID="DMD_10259_7233">
<div TYPE="DSpace BITSTREAM">
<fptr FILEID="BITSTREAM_ORIGINAL_10259_7233_1"/>
</div>
</div>
</structMap>
</mets></metadata></record></GetRecord></OAI-PMH>