1. WHAT FACTORS
CONTRIBUTING TO
PROPERTIES BECOME
PROBLEM?
Provided by:
Ronak Moradi, The University of Akron, OH
Fall Intern
December 2016
Community Development Department, The City of Fitchburg, MA

2. What Factors Are contributing to Properties Become Vacant
 Problem Property indicators in other communities
• Vacancy
• Poverty
• Unemployment
• Health
• The amount of time that a property has been in
that particular condition
• Water shut off
• Gas shut off
• Code violations
• Noise violations
• Police calls/crime reports
• Property tax payments
• Frequency in violations, complaints or problems
• Number of Inspections
• Record of Illegal Occupancy
• Record of Condemnation Intents
• Number of Administrative Citations
• Exterior Violations
• Fire Violations
• Interior Violations
• Nuisance Violation
• Condemned
• Dangerous Dogs
• Owner of the property: investors rather than
homeowners
• The length of the foreclosure process
• Population decline
• Physical condition of a structure
• Aesthetic or environmental damage: Deteriorated
or Unsafe/Hazard

3. NICE PROPERTIES Property Address / NICE Properties
190 RIVER ST 147 Daniels St 480 Water St 60 Albee St
94 MARSHALL RD 21 Pacific St 16 Market St 1050 Westminster St
12 NASHUA ST 17 Pacific St 99 Wall St 76 Prichard St
30-32 Prichard St 80 Highland Ave 22 Plymouth St 23 Pleasant St
48 St Joseph Av 5 Clinton St 9 Clinton St 16 Prichard St
98 Pleasant St 427 Oak Hill Rd 66 Myrtle Ave 273 Milk St
4 Upton St 64 Nashua St 63 Columbus St 34 Kimball Pl
127 Mt Vernon St
Code Enforcement Number of Records
Code Violation 28.00
Vacant/Foreclosing Registration 9.00
Misc Correspondence 1.00
Owner/Agent Information 1.00
Reinspection of code violation 1.00
Fire Report 1.00
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
AREACHECK
WARRANTS
FOLLOW-UP/…
SUSPICIOUS…
FIRE/AMBULANCE
SUSPICIOUSSITUATION
PRIVATETOWS
NARCOTICSOFFENSES
POLICEINFORMATION
DEPARTMENTAL…
UNWANTEDGUEST
MOTORVEHICLE…
POSSIBLEDOMESTIC
Animal
ASSAULTS
HANGUP911CALL
MALICIOUS…
PROSTITUTION
TRAFFICSERVICES
Frequency of Police Calls and Code
Enforcement
Police Calls
Number of
Records
Police Calls
Number of
Records
AREA CHECK 65.00 ILLEGAL DUMPING 3.00
TRAFFIC ENFORCEMENT 26.00 UNWANTED GUEST 3.00
WARRANTS 23.00 ANIMALS STRAY/UNRESTRAINED 2.00
DISTURBANCES 22.00 MOTOR VEHICLE ACCIDENTS 2.00
FOLLOW-UP/ INVESTIGATE 14.00 Motor Vehicle/ Disabled 2.00
Overdose/Possible 11.00 POSSIBLE DOMESTIC 2.00
SUSPICIOUS AUTO/TRUCK 11.00 Trespassing 2.00
SUMMONS ATTEMPT 10.00 Animal 1.00
FIRE/AMBULANCE 9.00 Animal/ other 1.00
SUSPICIOUS PERSON 8.00 ASSAULTS 1.00
SUSPICIOUS SITUATION 8.00 DRUNKENESS 1.00
Breaking & Entering 7.00 HANG UP 911 CALL 1.00
PRIVATE TOWS 7.00 LARCENYS/THEFTS 1.00
ASSIST OTHER AGENCY 5.00 MALICIOUS MISCHIEF/VANDALISM 1.00
NARCOTICS OFFENSES 5.00 Parking Complaint 1.00
DCF Request 4.00 PROSTITUTION 1.00
POLICE INFORMATION 4.00 RESTRAINING ORDER ATTEMPT 1.00
AGGRAVATED ASSAULTS 3.00 TRAFFIC SERVICES 1.00
DEPARTMENTAL SERVICES 3.00

4. Used Indicators in CityNexus
Code in
CiryNexus Definition Score
Code in
CiryNexus Definition Score
tabler_new_police_calls
0200 Rape 1
tabler_new_police_calls
2100 DRUNK DRIVING 1
0300 ROBBERY 1 2200 LIQUOR LAWS 1
0400 AGGRAVATED ASSAULTS 1 2205 Liquor Law F. S. U. Related 1
0500 BURGLARY 1 2300 DRUNKENESS 1
0510 Breaking & Entering 1 2400 DISTURBANCES 1
0600 LARCENYS/THEFTS 1 2404 POSSIBLE DOMESTIC 1
0700 MOTOR VEHICLE THEFTS 2405 SUSPICIOUS NOISES 1
700 false alarms fire department 1 2406 FAMILY DISTURBANCE/DOMESTICS 1
710 false alarms fire department 1 2407 Trespassing 1
0800 ASSAULTS 1 2409 Disturbance F. S. U. related 1
1000 FORGERY/COUNTERFEIT 1 2420 KEEP THE PEACE 1
1100 FRAUD 1 2421 HARASSMENT INCIDENT 1
1300 STOLEN PROPERTY 1 2430 UNWANTED GUEST 1
1400 MALICIOUS MISCHIEF/VANDALISM 1 2500 VAGRANCY 1
1401 Graffiti 1 2700 Threats 1
1500 WEAPONS/USE/POSS/MANU/LIC 1 8000 WARRANTS 1
1510 SHOTS FIRED 1 8501 RESTRAINING ORDER ATTEMPT 1
1550 BOMB THREAT 1 8503 HARASSMENT ORDER ATTEMPT 1
1600 PROSTITUTION 1 8504 R. O. Violation 1
1700 SEX OFFENSES/REGISTER LVL1,2,3 1 8505 Harassment Order Violation 1
1800 NARCOTICS OFFENSES 1 Year 2016 tabler_docuware_health_department 1
2000 FAMILY OFFENSES/ELDER 1
property_code is
2
tabler_fitchburg_residential_and_nonresidential_pr
operties -10000
2001 Child Abuse/ Neglect 1
property_code
is 3
tabler_fitchburg_residential_and_nonresidential_pr
operties -10000
Violation / police calls - in First 10 properties

5. ALL REASONS FOR A POLICE CALL
code Reasontext / Police Calls code Reasontext / Police Calls code Reasontext / Police Calls code Reasontext / Police Calls
cod
e
Reasontext / Police Calls
cod
e
Reasontext / Police Calls
0200Rape 2408Truancy/Juvenile 5504ANIMALS STRAY/UNRESTRAINED 1710DA Referal Sexual Offenses 4029
RELEASE FROM
INCARCERATION 6620TRAFFIC SPEED TRAILER
0300ROBBERY 2409Disturbance F. S. U. related 5505ANIMAL BITES ALL OTHER 1720DA Referral/ Disabled Person 4029
POLICE INFO. PRISONER
RELEASE 6625TRAFFIC ABANDONED MV
0400AGGRAVATED ASSAULTS 2410FIREWORKS 5506ANIMALS INJURED 1800NARCOTICS OFFENSES 4029
POLICE INFORMATION-PRI.
RELEAS 6630Traffic LPR Stop
0500BURGLARY 2420KEEP THE PEACE 5507ANIMALS VIC/ABAND/ABUSED 2000FAMILY OFFENSES/ELDER 4050ILLEGAL DUMPING 7100PRISONER SERVICES
0501ALARMS 2421HARASSMENT INCIDENT 6000MOTOR VEHICLE ACCIDENTS 2001Child Abuse/ Neglect 4070WELL BEING CHECK 7110PRISONER RELEASE
0510Breaking & Entering 2430UNWANTED GUEST 6010Motor Vehicle/ Disabled 2002DCF Request 4071Overdose/Possible 7500ASSIST OTHER AGENCY
0600LARCENYS/THEFTS 2500VAGRANCY 6200child seat install 2100DRUNK DRIVING 4100FIRE/AMBULANCE 8000WARRANTS
0700MOTOR VEHICLE THEFTS 2600ALL OTHER OFFENSES 6300TRAFFIC ENFORCEMENT 2200LIQUOR LAWS 4100FIRE/AMBULANCE326 8000`WARRANTS
0800ASSAULTS 2700Threats 6300
TRAFFIC ENFORCEMENT
STATIONARY 2205Liquor Law F. S. U. Related 4110Building Fire 8500DEPARTMENTAL SERVICES
0911HANG UP 911 CALL 2800MISSING PERSON 6300
STATIONARY TRAFFIC
ENFORCEMENT 2300DRUNKENESS 4120MOTOR VEHICLE FIRE 8500
STATIONARY TRAFFIC
ENFORCEMENT
1000FORGERY/COUNTERFEIT 2900RUNAWAYS 6301Speeding complaint 2301Panhandling 4300MENTAL HEALTH ISSUES 8500SUMMONS SERVED
1047FOLLOW-UP/ INVESTIGATE 3400
OFFICER INVOLVED M/V
ACCIDENT 6302Parking Complaint 2400DISTURBANCES 4310CIT (mental health) checks 8500SUMMONS ATTEMPT
1100FRAUD 3410OFFICER INJURED ON DUTY 6304traffic school zone 2401SUSPICIOUS AUTO/TRUCK 4500DEATHS/ SUICIDES 8501RESTRAINING ORDER ATTEMPT
1300STOLEN PROPERTY 3420Police Vehicle Damage 6310Tows for City 2401SUSPICIOUS PERSON 5250Lost Property 8502SUMMONS ATTEMPT
1400
MALICIOUS
MISCHIEF/VANDALISM 3900SUICIDE threat/ attempt 6600TRAFFIC SERVICES 2402SUSPICIOUS PERSON 5255FOUND PROPERTY 8503HARASSMENT ORDER ATTEMPT
1401Graffiti 4000NON-CRIMINAL COMPLAINTS 6600
STATIONARY TRAFFIC
ENFORCEMENT 2403SUSPICIOUS SITUATION 5499Animal/ other 8504R. O. Violation
1500
WEAPONS/USE/POSS/MANU/
LIC 4000`NON-CRIMINAL COMPLAINTS 6602PRIVATE TOWS 2404POSSIBLE DOMESTIC 5500ANIMAL COMPLAINTS 8505Harassment Order Violation
1510SHOTS FIRED 4005Complaint Against P.O. 6603Traffic Complaint by Citizens 2405SUSPICIOUS NOISES 5501ANIMALS DEAD 9400AREA CHECK
1550BOMB THREAT 4010City Claim 6605TRAFFIC PETITIONS 2406
FAMILY
DISTURBANCE/DOMESTICS 5502ANIMALS/BARKING DOGS 9400TRAFFIC ENFORCEMENT
1600PROSTITUTION 4029POLICE INFORMATION 6610TRAFFIC HANDICAPPED PARKING 2407Trespassing 5503ANIMAL/DOG BITES 9401AREA CHECK (motorcycle)
1700
SEX OFFENSES/REGISTER
LVL1,2,3 4029LETTER OF GOOD CONDUCT 6615TRAFFIC CAUTIONARY

6. Studying First 10 Properties with the Highest Score in CIityNexus
Last 12 month
Date
Property
rank in
CityNexus score Property Address
number of units
get from
assessors data
base
number/
description of
health dept.
reports
police reports-
number and
type of calls
false fire
alarms
building
dept
reports
Police calls
per unit
Health
Violation per
unit
9/27/2016 1 59 30-32 Prichard Street 5 8 37 19 1.6
9/27/2016 2 55 245 River Street 105 4 54 1 2 0.0
9/27/2016 3 51 67 Day Street 7 9 44 6 1.3
9/30/2016 4 37 1 Normandy Road 7 1 36 5 0.1
9/30/2016 5 36 16 Prichard Street 96 0 35 0 0.0
9/30/2016 6 32 98 Pleasant Street 12 13 3 0 1.1
9/30/2016 7 31 48 St. Joseph Avenue 3 3 22 7 1.0
9/30/2016 8 26 35 Day Street 74 0 25 1 0 0.0
9/30/2016 9 24 49 Cedar Street 7 5 0 0 0.7
9/30/2016 10 23 35 Holt Street 55 0 22 0 0.0
8 4
9
1 0
13
3
0
5
0
37
54 44
36 35
3 22 25
0
22
0
10
20
30
40
50
60
70
245 River Street 67 Day Street 1 Normandy Road 16 Prichard Street 98 Pleasant Street 35 Day Street 49 Cedar Street 35 Holt Street
Comparing Properties Considering Code Enforcement and Police Calls in General
number/ description of health dept. reports police reports- number and type of calls

7. 5
105
7 7
96
12
3
74
7
55
8
4
9
1 0
13
3 0
5
0
37
54
44
36 35
3
22 25
0
22
0
20
40
60
80
100
120
30-32 Prichard
Street
245 River Street 67 Day Street 1 Normandy Road 16 Prichard Street 98 Pleasant Street 48 St. Joseph
Avenue
35 Day Street 49 Cedar Street 35 Holt Street
Comparing number of units, health violations and police calls
number of units get from assessors data base number/ description of health dept. reports police reports- number and type of calls
19
2
6 5
0 0
7
0 0 0
1.6
0.0
1.3
0.1
0.0 1.1
1.0
0.0 0.7 0.00
5
10
15
20
25
30-32 Prichard
Street
245 River Street 67 Day Street 1 Normandy Road 16 Prichard Street 98 Pleasant Street 48 St. Joseph
Avenue
35 Day Street 49 Cedar Street 35 Holt Street
Comparing properties considering health violations and police calls per unit
Police calls per unit Health Violation per unit

8. 30-32 Prichard Street 245 River Street 67 Day Street 1 Normandy Road
DISTURBANCES 9 AGGRAVATED ASSAULTS 3 ASSAULTS 1 AGGRAVATED ASSAULTS 1
LARCENYS/THEFTS 1 ASSAULTS 7 Breaking & Entering 1 ASSAULTS 1
NARCOTICS OFFENSES 3 DISTURBANCES 13 BURGLARY 1 DISTURBANCES 3
PROSTITUTION 1 DRUNKENESS 1 DISTURBANCES 17 HARASSMENT INCIDENT 1
Trespassing 1 HARASSMENT INCIDENT 4 HARASSMENT ORDER ATTEMPT 1 HARASSMENT ORDER ATTEMPT 7
UNWANTED GUEST 3 KEEP THE PEACE 3 KEEP THE PEACE 1 KEEP THE PEACE 2
WARRANTS 19 LARCENYS/THEFTS 1 NARCOTICS OFFENSES 1 LARCENYS/THEFTS 1
Total 37 MALICIOUS MISCHIEF/VANDALISM 3 POSSIBLE DOMESTIC 4 MALICIOUS MISCHIEF/VANDALISM 2
POSSIBLE DOMESTIC 4 PROSTITUTION 2 NARCOTICS OFFENSES 1
48 St. Joseph Avenue R. O. Violation 2 R. O. Violation 1 POSSIBLE DOMESTIC 1
AGGRAVATED ASSAULTS 3 RESTRAINING ORDER ATTEMPT 7 RESTRAINING ORDER ATTEMPT 3 R. O. Violation 1
ASSAULTS 1 Threats 1 UNWANTED GUEST 5 RESTRAINING ORDER ATTEMPT 10
Breaking & Entering 3 UNWANTED GUEST 2 WARRANTS 6 WARRANTS 2
DISTURBANCES 8 WARRANTS 3 Total 44 WEAPONS/USE/POSS/MANU/LIC 3
DRUNKENESS 1 Total 54 Total 36
MALICIOUS MISCHIEF/VANDALISM 1
NARCOTICS OFFENSES 1 35 Day Street 16 Prichard Street 35 Holt Street
POSSIBLE DOMESTIC 1 DISTURBANCES 6 DISTURBANCES 11 ASSAULTS 1
WARRANTS 3 DRUNKENESS 1 FRAUD 2 Breaking & Entering 3
Total 22 FRAUD 1 HARASSMENT INCIDENT 6 DISTURBANCES 10
HARASSMENT ORDER ATTEMPT 2 LARCENYS/THEFTS 1 LARCENYS/THEFTS 1
98 Pleasant Street LARCENYS/THEFTS 4 MALICIOUS MISCHIEF/VANDALISM 1 MALICIOUS MISCHIEF/VANDALISM 3
DISTURBANCES 1 LIQUOR LAWS 1 NARCOTICS OFFENSES 4 NARCOTICS OFFENSES 1
POSSIBLE DOMESTIC 1 MALICIOUS MISCHIEF/VANDALISM 2 Trespassing 6 Threats 2
RESTRAINING ORDER ATTEMPT 1 RESTRAINING ORDER ATTEMPT 2 WARRANTS 4 UNWANTED GUEST 1
Total 3 Threats 1 Total 35 Total 22
Trespassing 4
WARRANTS 1
Total 25
Police calls-First 10 Properties in CityNexus

9. DISTURBAN
CES
24%
NARCOTICS
OFFENSES
8%
[CATEGORY
NAME]
[PERCENTA
GE]
WARRANTS
51%
30-32 PRICHARD STREET
AGGRAVATE
D ASSAULTS
5% ASSAULTS
13%
DISTURBANC
ES
24%
[CATEGORY
NAME]
[PERCENTAG
E]
KEEP THE
PEACE
5%
[CATEGORY
NAME]
[PERCENTAG
E]
POSSIBLE
DOMESTIC
7%
RESTRAININ
G ORDER
ATTEMPT
13%
WARRANTS
6%
245 RIVER STREET
DISTURB
ANCES
39%
POSSIBL
E
DOMESTI
C
9%
RESTRAI
NING
ORDER
ATTEMP
T
7%
UNWANT
ED
GUEST
12%
WARRAN
TS
14%
67 DAY STREET
DISTURBANCES
8%
HARASSMENT
ORDER ATTEMPT
19%
KEEP THE PEACE
5%
MALICIOUS
MISCHIEF/VANDA
LISM
5%
R. O. Violation
3%
RESTRAINING
ORDER ATTEMPT
28%
WARRANTS
6%
WEAPONS/USE/P
OSS/MANU/LIC
8%
1 NORMANDY ROAD
AGGRAVA
TED
ASSAULTS
14%
Breaking
&
Entering
14%
[CATEGOR
Y NAME]
[PERCENT
AGE]
NARCOTIC
S
OFFENSES
5%
POSSIBLE
DOMESTIC
5%
WARRANT
S
14%
48 ST. JOSEPH AVENUE

10. Date Property Address Code Violation
police
calls
Score in city
nexus
Units
false
fire
alarms
building
dept reports
Police calls
per unit
Health Violation
per unit
Total
1 17-10-2016 245 River Street 0 42 55 105 1 0.40 0.00 0.40
2 17-10-2016 67 Day Street 4 36 51 7 5.14 0.57 5.71
3 17-10-2016 1 Normandy Road 0 1 37 4 0.25 0.00 0.25
4 17-10-2016 16 Prichard Street 0 29 36 96 0.30 0.00 0.30
5 17-10-2016 98 Pleasant Street 6 3 32 12 0.25 0.50 0.75
6 17-10-2016 48 St. Joseph Avenue 1 15 31 3 5.00 0.33 5.33
7 17-10-2016 35 Day Street 0 23 26 74 1 0.31 0.00 0.31
8 17-10-2016 49 Cedar Street 2 10 24 7 1.43 0.29 1.71
9 17-10-2016 35 Holt Street 1 14 23 55 0.25 0.02 0.27
10 17-10-2016 973 Main Street 0 17 22 25 3 0.68 0.00 0.68
11 17-10-2016 190 Blossom Street 3 10 21 4 2.50 0.75 3.25
12 17-10-2016 69 Academy Street 0 12 21 7 1.71 0.00 1.71
13 17-10-2016 40 Garnet Street 7 8 20 6 1.33 1.17 2.50
14 17-10-2016 50 Day Street 0 18 20 125 0.14 0.00 0.14
15 17-10-2016 107 Prichard Street 0 8 19 4 2.00 0.00 2.00
16 17-10-2016 33 Goddard Street 0 8 19 3 2.67 0.00 2.67
17 17-10-2016 41 School Street 0 7 19 1 7.00 0.00 7.00
18 17-10-2016 46 Goddard Street 5 2 19 3 0.67 1.67 2.33
… … … … … … … … … … … …
100 17-10-2016194 Charles Street 2 10
Studying First 100 Property in CIityNexus

11. Studying First 500 Property in CIityNexus
Score in city
nexus Property Address
Code
Violation
Total Police
calls
Vacant/Foreclosin
g De-Registration
Vacant/Foreclosing
Registration Total
1 55.00 245 River Street
2 51.00 67 Day Street 4 36.00 40.00
3 37.00 1 Normandy Road
4 36.00 16 Prichard Street
5 32.00 98 Pleasant Street 6 3.00 10.00
6
31.00
48 St. Joseph
Avenue
7 26.00 35 Day Street
8 24.00 49 Cedar Street 2 10.00 12.00
9 23.00 35 Holt Street 1 14.00 15.00
10 22.00 973 Main Street
11 21.00 190 Blossom Street 3 10.00 13.00
12 21.00 69 Academy Street
13 20.00 40 Garnet Street 7 8.00 15.00
14 20.00 50 Day Street
15 19.00 464 Kimball Street 7 3.00 10.00
16 19.00 46 Goddard Street 5 2.00 7.00
17 19.00 7 Wood Street 1 1.00 2.00
18 19.00 72 Day Street 1 1.00 2.00
… … … … … … … …
500 3.00 90 Albee Street 1 1.00

12. Studying Properties with Score 1 and up in CIityNexus
(1465 Properties)
Property Address Units
Score in city
nexus
Code
Violation
Fire
Report
Total Police
calls
Unit
s
Score in city
nexus
1 67 Day Street 1.0 51.0 4 36.0 1.0 51.0
2 98 Pleasant Street 3.0 32.0 6 1.0 3.0 3.0 32.0
3 49 Cedar Street 1.0 24.0 2 10.0 1.0 24.0
4 35 Holt Street 1.0 23.0 1 14.0 1.0 23.0
5 190 Blossom Street 2.0 21.0 3 10.0 2.0 21.0
6 40 Garnet Street 3.0 20.0 7 8.0 3.0 20.0
7 46 Goddard Street 1.0 19.0 5 2.0 1.0 19.0
8 464 Kimball Street 1.0 19.0 7 3.0 1.0 19.0
9 7 Wood Street 4.0 19.0 1 1.0 4.0 19.0
10 72 Day Street 1.0 19.0 1 1.0 1.0 19.0
11 37 Pleasant Street 0.0 17.0 5 8.0 0.0 17.0
12 440 Elm Street 0.0 17.0 5 7.0 0.0 17.0
13 63 Hazel Street 3.0 17.0 3 11.0 3.0 17.0
14 113 Pratt Street 2.0 16.0 2 6.0 2.0 16.0
15 118 Madison Street 3.0 15.0 10 2.0 3.0 15.0
16 12 Granite Street 1.0 15.0 2 11.0 1.0 15.0
17 162 Rollstone Street 15.0 2 15.0
18 167 Canton Street 2.0 15.0 5 1.0 2.0 15.0
… … … … … … … … …
1465 993 main Street 2.0 2 2.0

13. WEKA, An Open Source Machine Learning Software
Other Properties in the City of
Fitchburg (around 11200 properties)
Properties from NICE Task Force (we
already know about their Status) and
some examples of good Properties
• Police Calls
• Code Enforcement
• Assessor’s Data Base
A comprehensive set
of data, including
WEKA
• City of Fitchburg
Problem Property
Indicators
• At-Risk Properties

14. Process of work
 Providing a comprehensive set of data, including police calls, code
enforcement and assessor’s data base by combining three data sets
o Police Calls from 1 January 2016 to 31 October 2016
o Code Enforcement from 1 January 2015 to 31 October 2016
o New Assessment Database 10 November 2016
 Matching property addresses with different group of information 
Making a big data set of 11200 properties and their related information.
 Providing Pattern of numbers of Unit and Room for those properties
without information on Unit and Room

15. Process of work
 Balancing the data  extracting number of rooms for each property
from data assessment spreadsheet. By dividing each score to number of
rooms, I could provide normalized data.
 Derivation 150 indicators for problem property (from police calls, code
enforcement and assessor’s data base) and classifying them by Weka
 Second Round: 60 Indicators
 Training Weka by a Training Data (NICE Task Force Properties and some
examples of good properties) and using Random Forests and J48
algorithm methods to classify all Fitchburg properties by their status

16.  Weka Classifiers : trees.J48
 Class for generating a pruned or unpruned C4.5 decision tree. For more information, see Ross
Quinlan (1993). C4.5: Programs for Machine Learning. Morgan Kaufmann Publishers, San Mateo,
CA.
 Unpruned
 Confidence Factor -- The confidence factor used for pruning (smaller values incur more pruning) =
0.01
 Numbers of Folds -- Determines the amount of data used for reduced-error pruning. One fold is
used for pruning, the rest for growing the tree = 3
 Attribute Evaluator
 Correlation Attribute Evaluator:
 Evaluates the worth of an attribute by measuring the correlation (Pearson's) between it and the
class.
 Search Methods
 Ranker : Ranks attributes by their individual evaluations.

17. 11200properties
6950 with at least one count of
indicators
A. 2783 properties
No information for numbers of room and unit
If Sum of Scores of indicators is equal or
higher than 16  Number of unit and room
and also property year built has been added
to its cell by using the assessor’s website
B. 4930 properties with information for numbers of
room and unit
Using theses part of data set to provide a
pattern of relation between number of units
and room and scores of indicators
4250 with zero information of
Indicators
These properties removed from the current data set
From B Data Set
Total
scoring
Average Room Average Units Behavior
Final Avg. per Group-
Room
Final Avg. per Group-
Units
Number of rooms in a
unit
1 7.6 1.5
Same 7.6 1.6 5
2 7.4 1.5
3 7.5 1.6
4 7.8 1.6
5 8.9 2.1
same 8.5 2.0 4
6 8.1 2.0
7 8.2 1.8
8 9.1 2.0
9 8.3 2.1
10 10.0 2.7
Same 10.8 2.8 4
11 11.6 2.8
12 12.6 6.4
Not Same 10.8 3.7 3
13 7.8 2.5
14 10.9 2.3
15 12.1 3.6
Studying Numbers of Room and Units in the 11200 Properties

18. Indicators of Problem Properties ( 150 Indicators)
Avg Room Avg. Rentallivunits Avg. Yearbuilt Buildtype Ownership Well
AGGRAVATED
ASSAULTS ALARMS
ANIMAL COMPLAINTS Animal/ other ANIMAL/DOG BITES ANIMALS DEAD ANIMALS INJURED
ANIMALS
STRAY/UNRESTRAINED
ANIMALS
VIC/ABAND/ABUSED
ANIMALS/BARKING
DOGS
ASSIST OTHER AGENCY BOMB THREAT Breaking Entering Building Fire BURGLARY Child Abuse/ Neglect child seat install
CIT (mental health)
checks
DCF Request DEATHS/ SUICIDES DEPARTMENTAL SERVICES DISTURBANCE
Disturbance F. S. U.
related DISTURBANCES DRUNK DRIVING DRUNKENESS
FIRE/AMBULANCE326 FIREWORKS FOLLOW-UP/ INVESTIGATE
FORGERY/COUNTERFE
IT FOUND PROPERTY FRAUD Graffiti HANG UP 911 CALL
ILLEGAL DUMPING KEEP THE PEACE LARCENYS/THEFTS
LETTER OF GOOD
CONDUCT
Liquor Law F. S. U.
Related LIQUOR LAWS Lost Property
MALICIOUS
MISCHIEF/VANDALIS
M
MOTOR VEHICLE FIRE
MOTOR VEHICLE
THEFTS Motor Vehicle/ Disabled NARCOTICS OFFENSES
NON-CRIMINAL
COMPLAINTS
OFFICER INJURED ON
DUTY Overdose/Possible Panhandling
Police Vehicle Damage POSSIBLE DOMESTIC PRISONER RELEASE PRISONER SERVICES PRIVATE TOWS PROSTITUTION R. O. Violation Rape
RUNAWAYS
SEX
OFFENSES/REGISTER
LVL1,2,3 SHOTS FIRED Speeding complaint
STATIONARY TRAFFIC
ENFORCEMENT STOLEN PROPERTY
SUICIDE threat/
attempt SUMMONS ATTEMPT
SUSPICIOUS PERSON SUSPICIOUS SITUATION Threats Tows for City TRAFFIC ABANDONED MV TRAFFIC CAUTIONARY
Traffic Complaint
by Citizens
TRAFFIC
ENFORCEMENT
traffic school zone TRAFFIC SERVICES TRAFFIC SPEED TRAILER Trespassing Truancy/Juvenile UNWANTED GUEST VAGRANCY WARRANTS
Air Quality Plan Approval Archive Asbestos Notification Beaver Permits Board & Secure Certified Mail Code Violation Court Doc
Invoice Landlord Registration Lien lien Discharge Misc Correspondence Nuisance Complaint Order To Correct
Owner/Agent
Information
Rental Permits Septic
Smoking Vote-Private
Clubs Ticket Transfer Station
Vacant/Foreclosing De-
Registration SUMMONS SERVED
TRAFFIC
ENFORCEMENT
STATIONARY
ALL OTHER OFFENSES AREA CHECK City Claim
FAMILY
DISTURBANCE/DOMEST
ICS HARASSMENT INCIDENT
MENTAL HEALTH
ISSUES Parking Complaint
RELEASE FROM
INCARCERATION
ANIMAL BITES ALL OTHER
AREA CHECK
(motorcycle)
DA Referal Sexual
Offenses
FAMILY
OFFENSES/ELDER
HARASSMENT ORDER
ATTEMPT MISSING PERSON
POLICE INFO.
PRISONER RELEASE
RESTRAINING ORDER
ATTEMPT
Vacant/Foreclosing
Registration ASSAULTS
DA Referral/ Disabled
Person FIRE/AMBULANCE
Harassment Order
Violation
MOTOR VEHICLE
ACCIDENTS
POLICE
INFORMATION ROBBERY
WEAPONS/USE/POSS/MANU
/LIC Face Card Pb
SUSPICIOUS
AUTO/TRUCK
TRAFFIC HANDICAPPED
PARKING WELL BEING CHECK Fire Report Pictures
SUSPICIOUS NOISES TRAFFIC PETITIONS Abandoned Vehicle
Housing Inspection
Report
Reinspection of code
violation

19. Indicator Department
How
Important
is the
indicator
Indicator Department
How
Important
is the
indicator
Indicator Department
How
Important
is the
indicator
Indicator Department
How
Important
is the
indicator
Board & Secure Code Enforcement 0.3338 Suspicious Person Police 0.2332 Unwanted Guest Police 0.1505
Parking
Complaint
Police 0.1336
Code Violation Code Enforcement 0.2057 Disturbances Police 0.2327 Traffic Services Police 0.149
Possible
Domestic
Police 0.127
Misc Correspondence Code Enforcement 0.2045
Suspicious
Situation
Police 0.2278
Summons
Attempt
Police 0.1485 Fraud Police 0.119
Ticket Code Enforcement 0.1967 Breaking Entering Police 0.216
All Other
Offenses
Police 0.1445 Shots Fired Police 0.1124
Housing Inspection
Report
Code Enforcement 0.1902
Narcotics
Offenses
Police 0.1951 Animals Dead Police 0.1445 Alarms Police 0.1083
Court Doc Code Enforcement 0.1656
Assist Other
Agency
Police 0.1892 Found Property Police 0.1445
Animal
Complaints
Police 0.0975
Abandoned Vehicle Code Enforcement 0.1445 Hang Up 911 Call Police 0.1876 Illegal Dumping Police 0.1445 Missing Person Police 0.0975
Certified Mail Code Enforcement 0.1445 Area Check Police 0.1866 Keep The Peace Police 0.1445
Motor Vehicle
Thefts
Police 0.0975
Face Card Code Enforcement 0.1445 Well Being Check Police 0.1863 Private Tows Police 0.1445
Harassment
Incident
Police 0.0821
Fire Report Code Enforcement 0.1445 DCF Request Police 0.1833 Prostitution Police 0.1445
Aggravated
Assaults
Police 0.0281
Invoice Code Enforcement 0.1445
Police
Information
Police 0.1787
Restraining
Order Attempt
Police 0.1445 Assaults Police 0.0148
Lien Code Enforcement 0.1445
Departmental
Services
Police 0.1755 Suspicious Noises Police 0.1445
Number of
Rooms
Assessors
Order To Correct Code Enforcement 0.1445 Warrants Police 0.1706 Threats Police 0.1445 Number of units Assessors
Reinspection of code
violation
Code Enforcement 0.1445 Trespassing Police 0.1563 Drunkeness Police 0.1432 Year built Assessors
Septic Code Enforcement 0.0975
Traffic
Enforcement
Police 0.1545
Motor Vehicle
Accidents
Police 0.1429 Ownership Assessors
Most Important Indicators of Problem Properties (60 Indicators) by Department

20. At-Risk Properties
Predicted At-
Risk Property
Percentage
Predicted At-Risk
Property
Percentage
Predicted At-Risk
Property
Percentage
Predicted At-Risk
Property
Percentage
1 wood St 0.9470 44 Berry Street Ex 0.9470 219 East St 0.9470 91 Milk St 0.8570
2 Prescott St 0.9470 46 Goddard St 0.9470 241 Canton St 0.9470 113 Payson St 0.8570
7 Wood St 0.9470 48 ST Joseph Av 0.9470 253 Madison St 0.9470 182 Rollstone St 0.8570
8 Blais Ct 0.9470 53 Highland Av 0.9470 266 Beech St 0.9470 479 Water St 0.8570
12 Park St 0.9470 57 Hazel St 0.9470 267 Mechanic St 0.9470
815 Ashburnham Hill
Rd
0.8570
12 Waverly St 0.9470 58 Marshall St 0.9470 275 Clarendon St 0.9470 31 Goddard St 0.6670
15 Fulton St 0.9470 59 Walnut st 0.9470 376 Elm St 0.9470 37 WINTER ST 0.6670
18 Foster St 0.9470 63 Beech St 0.9470 499 Water St 0.9470 43 Pleasant St 0.6670
21 Goddard St 0.9470 72 Pleasant St 0.9470
1142 Ashby State
Rd
0.9470 63 Myrtle Av 0.6670
22 Winter St 0.9470 81 Maverick St 0.9470 1351 Water St 0.9470 67 Day St 0.6670
24 Walnut St 0.9470 91 River St 0.9470 13 Chestnut St 0.8570 122 Leighton St 0.6670
27 Myrtle Av 0.9470 103 Nashua St 0.9470 15 Goddard St 0.8570 124 High St 0.6670
37 West St 0.9470 105 Blossom St 0.9470 33 Longedge Av 0.8570 190 Blossom St 0.6670
38 Granite St 0.9470 164 Blossom St 0.9470 35 Columbus St 0.8570 240 ELM ST 0.6670
38 Omena Pl 0.9470 176 Walton St 0.9470 42 Mayland St 0.8570 330 WATER ST 0.6670
40 Garnet St 0.9470 198 Blossom St 0.9470 54 Hazel St 0.8570 846 WESTMINSTER
HILL RD
0.6670
40 Myrtle Av 0.9470 215 Madison St 0.9470 66 Causeway St 0.8570

21. Recommendation For Further Study
 Providing more instances: One of My difficulty was the number of indicators and
instances. The number of indicators was really higher than instances in the
Training data set and this situation made both algorithms confused.
 Providing information for room and unit for 2783 properties from Part A (11200
properties)
 Simple Linear Regression: I could not get an acceptable result with Simple Linear
Regression. It could be because of problem with linear assumption, noisy input
and output variables and outliers.
 Providing a function that works with multiple tables in one command at the
CityNexus/Scoring Section