1. wiki4HE: Survey of faculty members from two Spanish universities on teaching uses of Wikipedia 2. Kinship: Relational dataset 3. Congressional Voting Records: 1984 United Stated Congressional Voting Records; Classify as Republican or Democrat 4. US Census Data (1990): The USCensus1990raw data set contains a one percent sample of the Public Use Microdata Samples (PUMS) person records drawn from the full 1990 census sample. 5. Adult: Predict whether income exceeds $50K/yr based on census data. Also known as "Census Income" dataset. 6. Census Income: Predict whether income exceeds $50K/yr based on census data. Also known as "Adult" dataset. 7. Census-Income (KDD): This data set contains weighted census data extracted from the 1994 and 1995 current population surveys conducted by the U.S. Census Bureau. 8. Insurance Company Benchmark (COIL 2000): This data set used in the CoIL 2000 Challenge contains information on customers of an insurance company. The data consists of 86 variables and includes product usage data and socio-demographic data 9. IPUMS Census Database: This data set contains unweighted PUMS census data from the Los Angeles and Long Beach areas for the years 1970, 1980, and 1990. 10. Labor Relations: From Collective Bargaining Review 11. Student Performance: Predict student performance in secondary education (high school). 12. Higher Education Students Performance Evaluation Dataset: The data was collected from the Faculty of Engineering and Faculty of Educational Sciences students in 2019. The purpose is to predict students' end-of-term performances using ML techniques. 13. Autism Screening Adult: Autistic Spectrum Disorder Screening Data for Adult. This dataset is related to classification and predictive tasks. 14. Sports articles for objectivity analysis: 1000 sports articles were labeled using Amazon Mechanical Turk as objective or subjective. The raw texts, extracted features, and the URLs from which the articles were retrieved are provided. 15. Real-time Election Results: Portugal 2019: Data set of the real-time election results of the 2019 Portuguese Parliamentary Election. 16. Bike Sharing Dataset: This dataset contains the hourly and daily count of rental bikes between years 2011 and 2012 in Capital bikeshare system with the corresponding weather and seasonal information. 17. Gender Gap in Spanish WP: Data set used to estimate the number of women editors and their editing practices in the Spanish Wikipedia 18. Speaker Accent Recognition: Data set featuring single English words read by speakers from six different countries for accent detection and recognition 19. Pedal Me Bicycle Deliveries: A dataset of weekly bicycle package deliveries by Pedal Me in London during 2020 and 2021. Nodes in the graph represent geographical units and edges are proximity based mutual adjacency relationships. 20. Drug consumption (quantified): Classify type of drug consumer by personality data | 
