Seminar is a small group of people who meet to discuss together a particular subject. It is, first and foremost, a conversation among people who share a common interest in expanding their understanding of idea, a book, a painting, or some other specific topic. It is relatively informal, at least compared to the lecture system of academic instruction. Seminar presentations are also intended for the improvement of technical knowledge of people.The presentations may also be uploaded in the internet for further reference by people.