"John Doyle"

Slide 2

Slide 3

Convergent networking: the promise

Convergent networking: the reality

Elements of systems

Two great abstractions of the 20th Century

Tower of Babel

Biology and advanced technology

Communications and computing

Slide 11

Slide 12

"From"

Theoretical foundations

Uncertainty management

Control theory

Information theory

Computation complexity

Software correctness

Multiscale physics

Unified theory of uncertainty management

Progress

Bonus!

Slide 24

Web/internet traffic

Slide 26

Slide 27

Slide 28

Slide 29

Slide 30

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35

Slide 36

Slide 37

Slide 38

Slide 39

Slide 40

Robustness of HOT systems

Large scale phenomena is extremely non-Gaussian

Slide 43

Slide 44

Slide 45

Slide 46

The physics view

Slide 48

Slide 49

Slide 50

Slide 51

The HOT view of power laws
(w/ Jean Carlson, UCSB)

The HOT view of power laws

HOT and fat tails?

Examples of HOT fat tails?

Examples with additional mechanisms?

Slide 57

Slide 58

Slide 59

Slide 60

Slide 61

Slide 62

Slide 63

Slide 64

Slide 65

Slide 66

Slide 67

Slide 68

Source coding for data compression

Source coding for data compression

Shannon coding

Shannon source coding

Slide 73

Slide 74

Coding = building barriers

Control = building barriers

Slide 77

"Compressed files look like white..."

Slide 79

Slide 80

Why is this a good model?

Web layout as generalized “source coding”

A toy website model
(= 1-d grid HOT design)

Slide 84

More complete website models
(Zhu, Yu, Effros)

Generalized “coding” problems

PLR optimization

Slide 88

Slide 89

PLR optimization

PLR optimization

Slide 92

Slide 93

Slide 94

Slide 95

Slide 96

Slide 97

Slide 98

Slide 99

Slide 100

Slide 101

Slide 102

More complete website models
(Zhu, Yu, Effros)

The broader Shannon abstraction

What can we keep?

Slide 106

Slide 107

Slide 108

Slide 109

Slide 110

Slide 111

Slide 112

Slide 113

"Two types of application traffic..."

"Separate source and channel coding"

"Packet loss can be handled..."

Optimization/control framework

Optimization/control framework

Optimization/control framework

Scalable Congestion Control

Robustness, evolvability/scalability, verifiability

Robustness of HOT systems

Feedback and robustness

The Internet hourglass

The Internet hourglass

Slide 126

Slide 127

Slide 128

Slide 129

Slide 130

Slide 131

Slide 132

Slide 133

Slide 134

The hourglass

Energy

Slide 137

Slide 138

Slide 139

Slide 140

Slide 141

Slide 142