factor rating method
TRANSCRIPT
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Operations Management
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Presenting By:-
Rahul Belkar 62Hiren Gada 73 Siddhant Gaikwad 75Pooja Madan 88Manjiri Mulye 95Richa Randerwala 101
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Contents: What Is Facility Location Model? Facility Location Models Factor Rating Method Examples of Factor Rating
Method Point Rating Method Examples of Point Rating Method Summary
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What Is Facility Location Models?
A branch of operations research and computational geometry
Mathematical modeling and solution
To minimize transportation costs, avoid placing hazardous materials near housing, outperform competitors' facilities, etc.
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Facility Location Models
Factor Rating Method Point Rating Method Break Even Analysis Qualitative Factor Analysis
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Factor-Rating MethodDefinition: The Factor Rating method is widely
used location technique. Useful for service & industrial locations
Rates locations using factors Intangible (qualitative) factors
Example: Education quality, labor skills Tangible (quantitative) factors
Example: Short-run & long-run costs
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Steps in Factor Rating Method
Used to evaluate location based on their relative factor Importance
1. List the most relevant factors in the location decision.
2. Rate each factor (say from/ for very low & 5 for very high) according to its relative importance.
3. Rate each location (say from 1 for very low & 10 for very high) according to its merits on each factor
4. Compute the product of rating by Multiplying the factor rating by location rating each factor.
5. Compute the sum of the product of rating for each location.
6. Select location with maximum rating.
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Factor Rating Method : Example 1
Labor pool and climateProximity to suppliersWage ratesCommunity environmentProximity to customersShipping modes
LOCATION FACTOR
154321
Rating
510
3527
Site 1
468527
Site 2
SCORES (0 TO 100)
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Solution
Labor pool and climateProximity to suppliersWage ratesCommunity environmentProximity to customersShipping modes
TOTAL
LOCATION FACTOR
154321
Rating
(1*5) 5(5*10) 50(4*3 ) 12(3*5) 15
(4*2) 8(2*7) 14
104
Site 1
(1*4)4(5*6) 30(4*8) 32(3*5 )15
(4*2) 8(2*7) 14
103
Site 2
SCORES (0 TO 100)
Weighted Score of site 1 is Highest.
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Factor-Rating Example-2Critical Scores
Success (out of 100) Weighted ScoresFactor Weight France Denmark France Denmark
•Labor availabilityand attitude .25 70 60 (.25)(70) = 17.5 (.25)(60) = 15.0•People-to car ratio .05 50 60 (.05)(50) = 2.5 (.05)(60) = 3.0•Per capita income .10 85 80 (.10)(85) = 8.5 (.10)(80) = 8.0•Tax structure .39 75 70 (.39)(75) = 29.3 (.39)(70) = 27.3•Education and health .21 60 70 (.21)(60) = 12.6 (.21)(70) = 14.7
Totals 1.00 70.4 68.0
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Point -Rating Method Definition The point method is widely
used. It requires identifying several compensable factors (like skills and responsibility) each with several degrees and also the degree to which each of these factors is present in the job or location.
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Steps in Point -Rating Method
Used to evaluate location based on their relative factor Importance
1. List the most relevant factors in the location decision.
2. Rate each factor (say from 1 for very low & 100 for very high) according to its relative importance.
3. Compute the product of rating by Adding the location rating each factor.
4. Compute the sum of the product of rating for each location.
5. Select location with maximum rating.
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Point Rating Method : Example 1
Labor pool and climateProximity to suppliersWage ratesCommunity environmentProximity to customersShipping modes
LOCATION FACTOR Rating
102030405060
Site 1 Site 2
SCORES (0 TO 100)
64
29354555
53
27304550
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Solution
Labor pool and climateProximity to suppliersWage ratesCommunity environmentProximity to customersShipping modes
TOTAL
LOCATION FACTOR Rating
102030405060
Site 1 Site 2
SCORES (0 TO 100)
64
29354555
174
53
27304550
160
Weighted Score for Site 1 is Highest.
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Point -Rating Example-2Critical Scores
Success (out of 100)Factor Weight France Denmark
•Labor availabilityand attitude .25 70 60•People-to car ratio .05 50 60•Per capita income .10 85 80•Tax structure .39 75 70•Education and health .21 60 70
Total 1.00 340 320
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Summary The objective of the Facility Location
Models is to achieve a maximal total service area from a specified number of facilities.
Calculation of total service areas from multiple facilities cannot be done merely by creating simple summary of service area polygons, as the polygons are overlaid one on top another.
The Facility Location Models was introduced as an alternative method of calculation.
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