Supervised Learning I: Perceptrons and LMS

1.Learning and memory Learning is the process. Getting the new information from world. Store and keep knowledge. Builds our memory. Memory Stores the learning information for very long time. Disorder of memory can be devastating.

Memory has 2 parts. 1.Where is the memory stored in the brain? 2.What are the mechanisms inside the storage of memory? Karl Lashley at Harvard University, conducted experiments to prove that really the memory is a distributive process. Memory has two types. 1. Short term memory 2. Long term memory Long-term memory refers to the continuing storage of information. Short-term memory is the capacity for holding a small amount of information in mind.

Long Term Memory Two kinds of Long Term Memory 1. Explicit 2. Implicit -Stored at different sites -Use a different logic Explicit Memory - everyday facts $ events. - medial temporal lobe $ the hippocampus. - require conscious recall.(How did I feel) - make conscious effort to recall the facts concerning the events. (eg. How to get back home from college)

Implicit memory -learning of motor and prceptual skills. -Riding a bicycle or strumming a guitar. -amygdala,cerebellum and certain reflex pathways. -recalled unconsciously. - creative skills Every day Learning processes are stored both implicit as well as explicit. We can use these information in our future.

The Behavioral approach to learning Learning process has 2 types. 1. Non associative 2. Associative Non Associative - Getting the properties of a single repetitive motivation. - can feel in everyday life. Associative - Getting the information from more actions. - Eg. Classical conditioning and Operant conditioning Classical conditioning has 2 types. Unconditioned Stimulus(food and electric shock to the leg) Conditioned Stimulus(sound tone produce weak responses)

Repeated action of CS, produce the result as US.(classical conditioning) Operant Conditioning -Operant conditioning is distinguished from classical conditioning (or respondent conditioning) in that operant conditioning deals with the reinforcement and punishment to change behavior. classical conditioning