MLData is a data repository and marketplace for the Data Sets to be used in the Machine Learning community. The data sets are all thoroughly vetted, pre-processed and organized.
There are many repositories out there but ML Data is the only one where absolutely NO pre-processing of data is required for the Machine Learning libraries we support.
Simply download the dataset CSVs or connect to the API for the library you are using and you are good to go. You can customize your CSV download and connect to different APIs depending on your data needs.
Sorry about that :( We are constantly adding library support. The next one on our list is Keras. You can let us know on what libraries you would like to see added.
"?" is used as a placeholder for missing values in string (nominal) attributes and -100000 is used as a placeholder in integer/float (numerical) attributes.
Contact Us with the suggestions! We read each and every one of them.