Calculate the accuracy and cost for M2. Model M₁ ACTUAL CLASS Cost Matrix + ACTUAL CLASS PREDICTED CLASS + 150 60 Accuracy = 90, cost =4210 Accuracy = 90, cost =4255 Accuracy = 80, cost =4210 O Accuracy = 80, cost=4255 40 250 PREDICTED CLASS C(ilj) + - + -1 1 100 0 Model M₂ ACTUAL CLASS PREDICTED CLASS + + 250 5 45 200

Calculate the accuracy and cost for M2. Model M₁ ACTUAL CLASS Cost Matrix + ACTUAL CLASS PREDICTED CLASS + 150 60 Accuracy = 90, cost =4210 Accuracy = 90, cost =4255 Accuracy = 80, cost =4210 O Accuracy = 80, cost=4255 40 250 PREDICTED CLASS C(ilj) + - + -1 1 100 0 Model M₂ ACTUAL CLASS PREDICTED CLASS + + 250 5 45 200

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Table 1. 4 processes arriving shown in Operating System Scheduling PDF for Shortest Job Next, non- preemptive Process Arrival Times Execution Times Service Times sequence Wait Times calculations PO 0 12 P1 21 9 P2 41 6 P3 6 3 Total wait time = ? Here the 4 processes of the PDF are repeated in Table 1, with arrival times changed to 0, 2, 4, and 6 respectively. Also, the execution times are changed to 12, 9, 6, and 3. You will be asked to fill table 1 with the numbers like the service times (when is each process serviced), the sequence of executions of these 4 processes in part (a) and part (b) below. Also, you will compute the total wait time. Note for FCFS, it is 1, 2, 3, 4 for P0, P1, P2, and P3; • for the SJN or Shortest Job Next with non-preemptive, PO is #1, P1 may not be #2; for SRT, or shortest remaining time, the preemptive version of SJN, PO is #1, but after 2 time units when P1 comes, P1 kicks out PO since its execution time is 4 < 9- 2 = 7; and P1 may be preempted by P2 later…
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