1.2 Expert Systems
How rules-based systems can be used for binary classification
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
Human decision making
How do humans make decisions?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611868/aedes-aegypti-1351001_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611967/doctor.png)
Dengue
headache
cold cough
vomiting
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611888/Symptoms-skin-rash.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611908/Symptoms-headache.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611943/sneezing.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611949/vomiting.jpeg)
fever
skin rash
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611981/Symptoms-fever.jpg)
Human decision making
How do humans make decisions from past experiences?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
fever
headache
cold cough
vomiting
Rash
Inputs
Output
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611868/aedes-aegypti-1351001_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611888/Symptoms-skin-rash.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611908/Symptoms-headache.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611943/sneezing.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611949/vomiting.jpeg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611981/Symptoms-fever.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611967/doctor.png)
Human decision making
How do humans make decisions from past experiences?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
fever
headache
cold cough
vomiting
Rash
inputs
output
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611868/aedes-aegypti-1351001_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611888/Symptoms-skin-rash.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611908/Symptoms-headache.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611943/sneezing.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611949/vomiting.jpeg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611981/Symptoms-fever.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611967/doctor.png)
1 | 0 | 0 | 0 | 0 |
---|---|---|---|---|
1 | 0 | 0 | 1 | 0 |
1 | 1 | 1 | 0 | 1 |
1 | 0 | 1 | 1 | 0 |
0 |
---|
0 |
1 |
0 |
0
1
Human decision making
Is this applicable in multiple domains ?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
LBW out
Impact
Height
no ball
shot attempted
Pitching in line
Inputs
Output
![](https://jai054.files.wordpress.com/2017/01/untitled.png)
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![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612256/Cricket_Umpire_dismissal.jpg)
Human decision making
Is this applicable in multiple domains ?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
LBW out
Impact
Height
no ball
shot attempted
Pitching in line
Inputs
Output
![](https://jai054.files.wordpress.com/2017/01/untitled.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612205/pitchline.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612235/noball.jpg)
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1 | 1 | 0 | 1 | 0 |
---|---|---|---|---|
1 | 1 | 1 | 0 | 0 |
1 | 1 | 1 | 0 | 1 |
1 | 0 | 1 | 1 | 0 |
0 |
---|
1 |
1 |
0 |
0
1
Features and Rules
What is the semantics of decision making?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
Output
Inputs
headache
cold cough
vomiting
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611888/Symptoms-skin-rash.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611908/Symptoms-headache.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611943/sneezing.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611949/vomiting.jpeg)
fever
skin rash
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611981/Symptoms-fever.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611868/aedes-aegypti-1351001_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611967/doctor.png)
Fever
Rash
Cold
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
if HIGH_FEVER and COLD:
return no_dengue
elif HIGH_FEVER and VOMITING and not RASH:
return no_dengue
elif HIGH_FEVER and VOMITING and RASH:
return dengue
Output
Inputs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611868/aedes-aegypti-1351001_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611967/doctor.png)
Fever
Rash
Cold
Expert Systems
How do we outsource this to a machine?
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612702/pc-monitor-3557826_960_720.png)
headache
cold cough
vomiting
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611888/Symptoms-skin-rash.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974254/images/5611908/Symptoms-headache.jpg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611943/sneezing.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611949/vomiting.jpeg)
fever
skin rash
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611981/Symptoms-fever.jpg)
Use-cases
Where have expert systems been used - past and recent applications
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
(1990)
(1990)
(1965)
(1995)
(2018)
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![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5612004/search.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5612111/chat.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5612112/robot.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5611976/speech-icon-2797263_960_720.png)
Hanane et. al., Expert Systems, May 2018.
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5616072/loan.png)
Limitations
Do we need to look beyond expert systems?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
Task of hiring someone for a job
10th marks
12th marks
graduate
CGPA
projects
if 10th>90 and 12>90 and GRADUATE:
return hired
elif 10th>80 and 12th>80 and CGPA>7:
return hired
elif 10th<70 and 12th<70:
return not_hired
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612702/pc-monitor-3557826_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5613227/human.png)
10th
12th
graduate
Output
YES / NO
Inputs
Limitations
Do we need to look beyond expert systems?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
Task of hiring someone for a job - involving many factors
10th marks
if 10th>90 and 12>90 and GRADUATE:
return hired
elif 10th>80 and 12th>80 and CGPA>7:
return hired
elif 10th<70 and 12th<70:
return not_hired
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612702/pc-monitor-3557826_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5613227/human.png)
10th
12th
graduate
12th marks
graduate
CGPA
projects
awards
.....
10th marks | 12th marks | graduate | CGPA | projects | ........... | awards |
---|---|---|---|---|---|---|
92 | 82 | yes | 9.2 | 3 | ........... | 2 |
83 | 75.2 | yes | 7.2 | 1 | ........... | 0 |
75 | 70 | no | 6.4 | 0 | ........... | 1 |
96 | 95 | yes | 9.5 | 5 | ........... | 4 |
90 | 89 | yes | 8.8 | 2 | ........... | 1 |
78 | 82 | yes | 7.6 | 0 | ........... | 0 |
86 | 88 | yes | 8.4 | 1 | ........... | 1 |
Lots of data to make sense from
Output
YES / NO
publications
Limitations
Do we need to look beyond expert systems?
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5613227/human.png)
if 10th>90 and 12>90 and GRADUATE:
return hired
elif 10th>80 and 12th>80 and POST_GRADUATE:
return hired
elif 10th<70 and 12th<70:
return not_hired
elif awards>2 and GRADUATE:
return hired
elif not POST_GRADUATE and publications>1:
return hired
elif projects>10 and publications>2:
return hired
elif competitions>3 and publications>3:
return hired
elif awards>5:
return hired
elif GRADUATE and not POST_GRADUATE and awards>5:
return hired
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612702/pc-monitor-3557826_960_720.png)
The rules can be very complex
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5616179/brain_white.gif)
10th marks | 12th marks | graduate | CGPA | projects | ........... | awards |
---|---|---|---|---|---|---|
92 | 82 | yes | 9.2 | 3 | ........... | 2 |
83 | 75.2 | yes | 7.2 | 1 | ........... | 0 |
75 | 70 | no | 6.4 | 0 | ........... | 1 |
96 | 95 | yes | 9.5 | 5 | ........... | 4 |
90 | 89 | yes | 8.8 | 2 | ........... | 1 |
78 | 82 | yes | 7.6 | 0 | ........... | 0 |
86 | 88 | yes | 8.4 | 1 | ........... | 1 |
Limitations
Do we need to look beyond expert systems?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
The rules can be sometimes inexpressible
10th marks
12th marks
graduate
post graduate
projects
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612702/pc-monitor-3557826_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5613227/human.png)
Output
YES / NO
Inputs
?
I saw honesty in his eyes
Limitations
Do we need to look beyond expert systems?
The rules can sometimes be unknown:
- task of predicting Ebola
Output
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5611967/doctor.png)
high fever
headache
sore throat
weakness
nausea
?
?
YES / NO
Inputs
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
Say Hi to Machine Learning
How to move from writing rules to learning rules?
def f(x):
if 10th>90 and 12>90 and GRADUATE:
return hired
elif 10th>80 and 12th>80 and POST_GRADUATE:
return hired
elif 10th<70 and 12th<70:
return not_hired
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612702/pc-monitor-3557826_960_720.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5613227/human.png)
10th
12th
graduate
Output
YES / NO
![](https://media0.giphy.com/media/sSgvbe1m3n93G/giphy.gif)
def f(x):
i=0
max_epochs=100
w = rand()
while(i<max_epochs):
dw = grad(w,w*x)
w = w - lr*dx
i += 1
return w*x
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5714729/MLsystem.gif)
10th marks | 12th marks | graduate | CGPA | projects | ........... | awards |
---|---|---|---|---|---|---|
92 | 82 | yes | 9.2 | 3 | ........... | 2 |
83 | 75.2 | yes | 7.2 | 1 | ........... | 0 |
75 | 70 | no | 6.4 | 0 | ........... | 1 |
96 | 95 | yes | 9.5 | 5 | ........... | 4 |
90 | 89 | yes | 8.8 | 2 | ........... | 1 |
78 | 82 | yes | 7.6 | 0 | ........... | 0 |
86 | 88 | yes | 8.4 | 1 | ........... | 1 |
hire | |
don't hire |
\( \hat{y} = f(x_1,x_2)\)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5714732/plot20.png)
Data, Democratization, Devices
Why has Machine Learning been so successful ?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
Democratized model and Learning Algorithms
Abundant data
Relatively fast and cheap cloud/computing
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Different roles in the ML world
How this relates to you ?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
Collect, curate data
![](https://s3.amazonaws.com/media-p.slid.es/uploads/974875/images/5576174/pasted-from-clipboard.png)
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ML Engineering
ML Research
![](https://s3.amazonaws.com/media-p.slid.es/uploads/979664/images/5617527/pasted-from-clipboard.png)
Sources are mentioned in the last slide.
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Fast
Efficient
Better
Define Tasks
Takeaway
How do we contrast expert systems from machine learning?
(c) One Fourth Labs
![](https://s3.amazonaws.com/media-p.slid.es/uploads/972808/images/5558778/logo_big.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5613548/think.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980600/images/5613227/human.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5612702/pc-monitor-3557826_960_720.png)
if 10th>90 and 12>90 and GRADUATE:
return hired
elif 10th>80 and 12th>80 and POST_GRADUATE:
return hired
elif 10th<70 and 12th<70:
return not_hired
elif awards>2 and GRADUATE:
return hired
elif not POST_GRADUATE and publications>1:
return hired
elif projects>10 and publications>2:
return hired
elif competitions>3 and publications>3:
return hired
elif awards>5:
return hired
elif GRADUATE and not POST_GRADUATE and awards>5:
return hired
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![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717079/qa.jpeg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717078/selfdrivingcars.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717077/videosurvelince.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717075/activity.png)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717074/video.jpeg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717072/textmining.jpeg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717111/medicalimaging.jpeg)
![](https://s3.amazonaws.com/media-p.slid.es/uploads/980328/images/5717121/objdet.png)
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Sources
- https://angel.co/projects/518942-human-activity-recognition-machine-learning
- http://www.robots.ox.ac.uk/~minhhoai/papers/SegReg_CVPR11.pdf
- https://www.techrepublic.com/pictures/photos-the-worlds-self-driving-cars-racing-toward-2020-and-beyond/
- https://en.wikipedia.org/wiki/File:Computed_tomography_of_human_brain_-_large.png
- https://en.wikipedia.org/wiki/Linear_regression#/media/File:Linear_regression.svg
- http://https://en.wikipedia.org/wiki/File:K-means_convergence.gif
- https://https://en.wikipedia.org/wiki/File:Autoencoder_structure.png
Finalmerge1.2
By preksha nema
Finalmerge1.2
- 832