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Therefore, knowing and characterising public procurement announcements (tenders) is fundamental for managing public resources well. This article presents the case of public procurement in Spain, analysing a dataset from 2012 to 2018: 58,337 tenders with a cost of 31,426 million euros. Many studies of public procurement have been conducted globally or theoretically, but there is a dearth of data analysis, especially regarding Spain. A quantitative, graphical, and statistical description of the dataset is presented. Mainly, the analysis is of the relation between the award price and the bidding price. An award price estimator is proposed that uses the random forest regression method. A good estimator would be very useful and valuable for companies and public procurement agencies. It would be a key tool in their project management decision making. Finally, a similar analysis, employing a dataset from European countries, is presented to compare and generalise the results and conclusions. Hence, this is a novel study which fills a gap in the literature.<\/jats:p>","DOI":"10.1155\/2019\/2360610","type":"journal-article","created":{"date-parts":[[2019,11,14]],"date-time":"2019-11-14T23:30:33Z","timestamp":1573774233000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Public Procurement Announcements in Spain: Regulations, Data Analysis, and Award Price Estimator Using Machine Learning"],"prefix":"10.1155","volume":"2019","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4812-1621","authenticated-orcid":false,"given":"Manuel J.","family":"Garc\u00eda Rodr\u00edguez","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3217-8586","authenticated-orcid":false,"given":"Vicente","family":"Rodr\u00edguez Montequ\u00edn","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francisco","family":"Ortega Fern\u00e1ndez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1411-6288","authenticated-orcid":false,"given":"Joaqu\u00edn M.","family":"Villanueva Balsera","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,11,14]]},"reference":[{"key":"e_1_2_9_1_2","unstructured":"European Commission European semester thematic factsheet public procurement 2017 https:\/\/ec.europa.eu\/info\/sites\/info\/files\/file_import\/european-semester_thematic-factsheet_public-procurement_en_0.pdf."},{"key":"e_1_2_9_2_2","unstructured":"The National Securities Market Commission (CNMV) from Spain Radiography of public procurement procedures in Spain 2019 https:\/\/www.cnmc.es\/sites\/default\/files\/2314114_5.pdf."},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.technovation.2018.02.015"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.giq.2015.07.006"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1257\/jep.28.2.3"},{"key":"e_1_2_9_6_2","doi-asserted-by":"publisher","DOI":"10.1257\/jep.31.2.87"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.compind.2014.04.005"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.compind.2013.12.006"},{"key":"e_1_2_9_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.giq.2019.01.001"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.pursup.2013.02.003"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.5539\/ijbm.v11n3p1"},{"key":"e_1_2_9_12_2","doi-asserted-by":"publisher","DOI":"10.1111\/iere.12368"},{"key":"e_1_2_9_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijforecast.2018.10.005"},{"key":"e_1_2_9_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijproman.2015.11.001"},{"key":"e_1_2_9_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.procs.2015.08.601"},{"key":"e_1_2_9_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.euroecorev.2018.11.004"},{"key":"e_1_2_9_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijindorg.2012.02.002"},{"key":"e_1_2_9_18_2","doi-asserted-by":"publisher","DOI":"10.1155\/2018\/9036340"},{"key":"e_1_2_9_19_2","doi-asserted-by":"publisher","DOI":"10.1080\/00036846.2018.1537477"},{"key":"e_1_2_9_20_2","volume-title":"The Official Journal of the European Union","author":"Publications Office of the European Union","year":"2019"},{"key":"e_1_2_9_21_2","volume-title":"European Union Open Data Portal","author":"Publications Office of the European Union","year":"2019"},{"key":"e_1_2_9_22_2","unstructured":"Tenders Electronic Daily (TED) Online version of the supplement to the official journal of the EU 2019 https:\/\/ted.europa.eu."},{"key":"e_1_2_9_23_2","unstructured":"European Commission Eurostat https:\/\/ec.europa.eu\/eurostat."},{"key":"e_1_2_9_24_2","doi-asserted-by":"publisher","DOI":"10.1023\/A:1010933404324"},{"key":"e_1_2_9_25_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.patcog.2010.08.011"},{"key":"e_1_2_9_26_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.neunet.2018.12.010"},{"key":"e_1_2_9_27_2","volume-title":"Machine Learning Benchmarks and Random Forest Regression","author":"Segal M. 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