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	<title><![CDATA[Datasets]]></title>
	<link>https://spl.ics.forth.gr/titan/software/datasets/</link>
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	<description><![CDATA[Articles on category Datasets]]></description>
	<copyright><![CDATA[Copyright 2026, Titan Project of Signal Processing Laboratory]]></copyright>
	<pubDate>Sun, 19 Apr 2026 08:12:57 +0000</pubDate>
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		<title><![CDATA[Datasets]]></title>
		<link>https://spl.ics.forth.gr/titan/software/datasets/</link>
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		<title><![CDATA[Galaxy Redshift Prediction Dataset]]></title>
		<description><![CDATA[<p>
    <br></p>
<p>


    <a href="https://doi.org/10.5281/zenodo.11073039"><img src="https://zenodo.org/badge/DOI/10.5281/zenodo.11073039.svg" alt="DOI"></a> <br>



    <u><a href="https://github.com/TITAN-Project-EU/PhotoZ_SDSS_ML"><strong>GitHub Repo</strong> </a> </u><br>
    <u><a href="https://zenodo.org/records/11073039"><strong>Download Dataset</strong> </a> </u>
</p>
<br>
<h1> Galaxy Redshift Prediction </h1><br>
<p> This project utilizes data from the Sloan Digital Sky Survey (SDSS) to create a machine learning model that predicts the redshift of galaxies based on their photometric properties ('u', 'g', 'r', 'i', 'z'). The model is built using TensorFlow, demonstrating the application of a Multi-Layer Perceptron (MLP) in predicting astronomical measurements.</p>
<h2> Project Overview:</h2><br>
<p> The dataset comprises photometric properties and redshifts for approximately 1M galaxies, with the aim of training a machine learning model to understand and predict how these properties correlate with redshift. The model could potentially be used to estimate redshifts for other astronomical data, assisting in cosmological studies.</p>
<h3> Data Description </h3><br>
<p>The data is extracted using a SQL query from the SDSS online database, which includes:</p>
<ul>
    <li> Photometric magnitudes in five different bands (u, g, r, i, z). </li>
    <li>Spectroscopic redshifts and their errors. </li>
    <li>Metadata such as right ascension (ra), declination (dec), and object identifiers </li>
</ul>


<u><a href="https://zenodo.org/records/11073039"><strong>Download Dataset</strong> </a> </u>


<p><br></p>

<p>
    <b>Dependencies:</b><br>

Ensure you have the following installed:
</p><ul>
    <li> Python 3.8 or above </li> 
    <li>    TensorFlow 2.x </li> 
        <li>Pandas </li> 
    <li>    NumPy</li> 
        <li>Scikit-learn</li> 
    <li>    Matplotlib</li> 
</ul>
<p></p>

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		<link>https://spl.ics.forth.gr/titan/software/datasets/galaxy-redshift-prediction-dataset.html</link>
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		<pubDate>Wed, 08 May 2024 09:26:00 +0000</pubDate>
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