In the image, a group of people is gathered in a living room, engaged in an activity. The focal point of the scene is a large white screen, which appears to be displaying a presentation or a video. The projector is attached to the screen, casting a soft glow on the screen and illuminating the room. Two young men are seated on the couch in front of the screen, seemingly engaged in the presentation. They are both looking up at the screen, with one of them leaning forward in interest. Their posture suggests that they are learning something new or gaining valuable insights from the content being displayed. The living room is well-lit, with natural light coming in from a window on the left side of the image. The walls are painted a light color, and there are various decorative items on display, such as a framed picture and a lampshade. The overall atmosphere of the room is casual and relaxed, with people gathered together to share a learning experience. Text transcribed from the image: Background: Attention Mechanism Q K SQKT (Nxd) (Nxd) A Softmax(S) {NXN) V 0 (NxC) (Nxd) H Query Key Typical sequence length N: 1K-8K Head dimension d: 64-256 O=Softmax(QKT)V