Backward chaining(bala,karthi,rajesh)


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  • Backward chaining(bala,karthi,rajesh)

    1. 1. Backward Chaining Balaji C Karthikeyan KS Rajesh Kumar R
    2. 2. Definition of Backward Chaining <ul><li>The process in rule-based systems that constructs a hypothesis, then tests it by working backward through the rules to see if the hypothesis is supported. </li></ul><ul><li>The strategy of teaching tasks in reverse of the order in which they are done on the job. </li></ul><ul><li>a form of reasoning that starts with the conclusion and works backward. The goal is broken into many subgoals or sub-subgoals which can be solved more easily. Known as top-down approach. </li></ul>
    3. 3. Backward Chaining <ul><li>Backward Chaining is goal driven, appropriate for problem solving </li></ul><ul><li>e.g. Where are my key? How do I get my AI Program? </li></ul><ul><li>Idea: work backwards from the query q : </li></ul><ul><ul><ul><li>check if q is known already, or </li></ul></ul></ul><ul><ul><ul><li>prove by BC all premises of some rule concluding q </li></ul></ul></ul><ul><li>Avoid loops: check if new subgoal is already on the goal stack </li></ul><ul><li>Avoid repeated work: check if new subgoal </li></ul><ul><ul><li>has already been proved true, or </li></ul></ul><ul><ul><li>has already failed </li></ul></ul><ul><li>to prove q by BC, </li></ul>
    4. 4. Backward chaining example
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    14. 14. Applications of Backward Chaining <ul><li>CRM (Customer Relation Management) </li></ul><ul><li>Air-to-Surface Weapon Delivery </li></ul><ul><li>Marketing </li></ul><ul><li>Teaching </li></ul>
    15. 15. Backward Chaining of the Olympic Lifts
    16. 16. The Everyday of A Strength & Conditioning Coach <ul><li>Coach Goals/Objectives </li></ul><ul><li>Your Goals/Objectives </li></ul><ul><li>Lack of Training Experience (Freshman) </li></ul><ul><li>Past and Current Injuries </li></ul><ul><li>Time Devoted To Training </li></ul><ul><li>Equipment Availability </li></ul>
    17. 17. The Traditional Teaching Style <ul><li>Logical Progression: From Initiation To Completion. </li></ul><ul><li>Specific Start To Finish. </li></ul><ul><li>“ Forward Chaining” Style </li></ul><ul><li>Deadlift, RDL, Power Shrug, Scoop into Front Squat, Catching. </li></ul>
    18. 18. Traditional Teaching Style
    19. 19. Traditional Teaching Style Downfalls <ul><li>Learning becomes more difficult as the progression advances. </li></ul><ul><li>Mental work is required of the learner. </li></ul><ul><li>Interference and thinking reduces the learning rate. </li></ul><ul><li>Emotional issues further retard performance improvements. </li></ul>
    20. 20. Backward Chaining? <ul><li>Rehabilitation World: </li></ul><ul><li>Backward Pedaling Increased Knee ROM Faster. </li></ul><ul><li>Walking Backwards Improved Knee Extension with Gait. </li></ul><ul><li>Backstep Lunges Improved Forward Lunges. </li></ul><ul><li>Business Planning/Info: </li></ul><ul><li>Establish The Vision, Work Backward From There to Current Day. </li></ul><ul><li>Customer Service. </li></ul><ul><li>Marketing </li></ul><ul><li>Creating Training Systems </li></ul>
    21. 21. How I Applied The Backward Chaining Concept <ul><li>Find Out What Kind of A Learner Your Athlete Is! </li></ul><ul><li>Visual Learners: See demonstration or written. </li></ul><ul><li>Auditory Learners: Learns best with sound; coaching with verbal instruction. </li></ul><ul><li>Kinesthetic Learners: Needs to perform what is being taught </li></ul><ul><li>Combination Learners: Any combination of the above. </li></ul><ul><li>(Developmental Essentials, Official Textbook of the IYCA Development Essentials Coaching System, pp46-47) </li></ul>
    22. 22. <ul><li>Front Squat Position </li></ul><ul><ul><li>Keep Elbows Up </li></ul></ul><ul><ul><li>Rest Bar On Shoulders </li></ul></ul><ul><ul><li>Chest Out and Upright </li></ul></ul><ul><li>Front Squat </li></ul><ul><ul><li>Perform ¼ Front Squat </li></ul></ul><ul><ul><li>Keep Elbows Up </li></ul></ul><ul><ul><li>Chest Out and Upright </li></ul></ul><ul><ul><li>Look Straight Ahead </li></ul></ul><ul><ul><li>Weight On The Heels </li></ul></ul><ul><ul><li>Sitting Back </li></ul></ul>~~
    23. 23. 4-Step Progression of the Hang Power Clean <ul><li>2. RDL into Power Shrug </li></ul><ul><ul><li>Feet Shoulder-Width Apart </li></ul></ul><ul><ul><li>Feet Pointing Straight Ahead </li></ul></ul><ul><ul><li>Keep Chest Up, “Big Chest” </li></ul></ul><ul><ul><li>Push Hips Backward As You Lower The Bar </li></ul></ul><ul><ul><li>Keep Back Flat and Strong </li></ul></ul><ul><ul><li>No Knee Bending, Should All Be From The Hips (Hip Check, J-Lo, Duck Butt) </li></ul></ul><ul><ul><li>Move From RDL Position To Upright, Full Extension. </li></ul></ul>
    24. 24. 6-Step Progression of the Snatch Cleans <ul><li>3. Deadlift With Snatch Grip </li></ul><ul><ul><li>Pulling From Floor </li></ul></ul><ul><ul><li>Feet Shoulder-Width Apart </li></ul></ul><ul><ul><li>Toes Pointing Straight Ahead </li></ul></ul><ul><ul><li>Chest Up, Head Up…But Looking Straight Ahead </li></ul></ul><ul><ul><li>Drive Feet/Legs Through The Floor As You Lift Weight Off Floor. </li></ul></ul>
    25. 25. Benefits of Backward Chaining <ul><li>Easier to Teach </li></ul><ul><li>Takes Less Time To Teach </li></ul><ul><li>Athletes Report Better Training Response To Program (Buying into the system) </li></ul><ul><li>Athletes training memory improved: Allowing the coach to do more intense teaching, coaching, and training! </li></ul>
    26. 26. Thanks for your attention Thank you Applause Questions …