We develop an imperative calculus that provides a formal model for both single and mixin inheritance. By introducing classes and mixins as the basic object-oriented constructs in a-calculus with records and references, we obtain a system with an intuitive operational semantics. New classes are produced by applying mixins to superclasses. Objects are represented by records and produced by instantiating classes. The type system for objects uses only functional, record, and reference types, and there is a clean separation between subtyping and inheritance.

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This paper focuses on a Natural Language Processing (NLP) system and Image Recognition using python and Raspberry Pi. NLP Engines are widely used in various tech domains such as surveillance, defense, advanced medical diagnosis, virtual assistant and machine learning. Open CV based image processing algorithm is applied for image recognition, facial comparison, pattern recognition, security system, object detection and deep learning. In this proposed system to implement intelligent QAS system, NLP and Image processing are integrated.