It’s 2015, do you know what your kids are posting online? Children and teenagers use public video platforms like YouTube and Vine to share their stories. Knowing more about what and how they share could help us design tools that encourage creativity and self-expression while helping young people reflect on online safety and privacy. To find out more about what youth video authors do online, we conducted a study that looked at over 300 recently-shared youth authored videos.
The music services that I subscribe to don’t understand me very well. Pandora, which puts together personalized radio stations, seems to think that I only like the very most popular music, which I don’t. Spotify, which offers a new personalized playlist for me each week, seems to think that I only like quite obscure music. But neither of them get it right, and I wish that I could tell them to change.
Wikipedia’s best content is mainly where its readers aren’t. For instance, the article about weddings is seen thousands of times every day, yet the community labels it “quite incomplete”, its prose “distinctly unencyclopedic”, and a call for additional sources to verify its content has been featured prominently at the top of the article for over four years. It turns out that this is not uncommon; each month Wikipedia’s articles are viewed billions of times, and over 40% of these views are to articles that would be of significantly higher quality if the encyclopaedia’s contributors followed their readers.
It has been about six years since we released our previous major ratings dataset, MovieLens 10M. Today, we have released its successor, MovieLens 20M, alongside two new non-archival datasets for education and development. These datasets are available for download at http://grouplens.org/datasets/movielens/. (more…)