The National Institute of Standards and Technology (NIST-JANAF) database , renowned for its meticulously curated experimental data, serves as a cornerstone in materials science research. This collection encompasses data regarding free energy, total energy, and entropy, specifically focusing on materials in the gas phase and at a temperature of 1200 K. We will refer to this experimental dataset as ' JANAF' for the rest of the paper. This dataset contains a total of 694 materials. In conjunction with the JANAF, we have also extracted a dataset from PhononDB . The PhononDB database offers invaluable insights into the phonon dispersion, density of states, and related thermal properties across a diverse range of materials. As our goal was to focus on small datasets, we specifically choose the metal oxide compounds, extracting pertinent data such as free energy, total energy, and entropy at varying temperatures. The dataset consists of a total of 873 materials. Throughout the paper, we will refer to this dataset as the 'PhononDB'.