Ryōji Uehara is a person who was born in Japan and is known for their work in the field of computer science. Would you like to know more about computer science? It's all about using machines to do different things like playing games, typing documents, or even talking to friends online.
Now, Uehara was really good at computer science and did lots of important things like designing computer programs and algorithms (a fancy word for a set of instructions). These programs and algorithms helped people to solve problems faster and more efficiently.
In fact, Uehara was so good at what they did that they even got awards for it! They won a prestigious prize called the ACM Gordon Bell Prize which is given to people who make important contributions to the field of computer science.
So, in short, Ryōji Uehara is a really smart person who did really important things in the world of computer science.