16.422 Information Signal Detection Theory Prof, r, john hansman Acknowledgements to Profs tom Sheridan and Jim Kuchar whose notes are the core of this lecture
System Supervisory Control Computer Interface Display Control Sensors Direct Observation 16.422 Information & Signal Detection Theory Prof. R. John Hansman Acknowledgements to Profs Tom Sheridan and Jim Kuchar whose notes are the core of this lecture
Outline Information Theory Signal Detection Theory Alerting Introduction
System Supervisory Control Computer Interface Display Control Sensors Direct Observation Outline y Information Theory y Signal Detection Theory y Alerting Introduction
口中 Information Theory What is information? Control theoretic view a Lines in Control Block Diagram nDirect observatio DIsplay Supervisory ontrol System Control Computer Interface Sensors Bayesian view a Information is something which reduces uncertainty in a world model
System Supervisory Control Computer Interface Display Control Sensors Direct Observation Information Theory y What is information? y Control Theoretic View Lines in Control Block Diagram y Bayesian View Information is something which reduces uncertainty in a world model System Supervisory Control Computer Interface Display Control Sensors Direct Observation
Bayes Theory h= Hypothesis, D=Data P(H D=PO HP(p(D) With new data p(H D1, D2)=p(2 H) [p(D1 H)p(Hp(DI)/p(D2) With 2 hypotheses p(HI D1, D2)=p(D2 H1 p(D1 HD) p(H1) p(H2D1,D2)p(D2|H2)p(D1|H2)p(H2) Posterier odds ratio prior odds ratio
System Supervisory Control Computer Interface Display Control Sensors Direct Observation Bayes Theory H = Hypothesis, D = Data p(H | D) = p(D | H) p(H)/p(D) With new data p(H | D1,D2) = p(D2 | H) [p(D1 | H) p(H)/p(D1) /p(D2) With 2 hypotheses p(H1 | D1,D2) = p(D2 | H1) p(D1 | H1) p(H1) p(H2 | D1,D2) p(D2 | H2) p(D1 | H2) p(H2) Posterier odds ratio prior odds ratio
I NfORMADOA MEASURGM L:∠ StANDN INFoRMANDN MDDE Ball Sys*a Tackmieal Journo Mn? ww book Shannon Information Theory sebe→oe→小→航→ 口 Bell labs 日 Telephony 圈35 STA→5sa→bah→eecn→ 2aNMET MESSAGE SET Tom Sheridan notes FROND RuLeS. K小NAPR1R siMuLus(MeSSAGrE )CHose AT RAwDon Plx[)CousTaNT (Courtesy of Thomas Sheridan. Used with permission
System Supervisory Control Computer Interface Display Control Sensors Direct Observation y Shannon Information Theory Bell Labs Telephony y Tom Sheridan Notes (Courtesy of Thomas Sheridan. Used with permission.)