1 00:00:00,900 --> 00:00:07,860 Here are the general's steps in Malta in the process of forecasting in the coming lectures. 2 00:00:08,160 --> 00:00:10,560 We will focus more on each of these steps. 3 00:00:11,130 --> 00:00:18,150 But in this lecture, we will just look at the overall process as an all data analysis. 4 00:00:18,540 --> 00:00:24,750 The process of forecasting begins with good definition, which means that we need to clearly set the 5 00:00:24,750 --> 00:00:29,040 objectives which we aim to achieve from the forecasting exercise. 6 00:00:30,750 --> 00:00:38,400 Then relevant data is collected and cleaned and explored using visualization tools. 7 00:00:39,840 --> 00:00:43,050 This is basically getting the data ready for analysis. 8 00:00:44,100 --> 00:00:45,570 And this is a big task. 9 00:00:46,590 --> 00:00:52,650 In fact, 50 to 60 percent of your time will be spent in getting the data ready for analysis. 10 00:00:54,910 --> 00:01:01,300 Once the details are ready, we select a set of prudential forecasting methods based on the nature of 11 00:01:01,300 --> 00:01:01,720 the data. 12 00:01:03,660 --> 00:01:10,020 All these different methods are applied and their performance is compared in terms of forecast accuracy 13 00:01:10,830 --> 00:01:17,460 and other measures related to what set good, the best method is then chosen. 14 00:01:18,150 --> 00:01:20,190 And it is used to generate forecast. 15 00:01:23,600 --> 00:01:33,170 Of course, the process does not end here because forecasting is typically an ongoing goal and forecast 16 00:01:33,260 --> 00:01:40,970 accuracy is monitored and sometimes the forecasting method is adapted or changed to accommodate the 17 00:01:40,970 --> 00:01:44,870 changes in the good or changes in the data over time. 18 00:01:47,720 --> 00:01:50,840 Also note the two set of arrows. 19 00:01:52,760 --> 00:01:56,240 These are indicating that part of the process are iterative. 20 00:01:57,290 --> 00:02:05,420 For instance, once the series is explored, one might determine that the series at hand cannot achieve 21 00:02:05,420 --> 00:02:10,020 the required goal leading to the collection of new or supplemented data. 22 00:02:11,900 --> 00:02:13,820 And that I dreaded process takes place here. 23 00:02:14,990 --> 00:02:21,860 When we are playing a forecasting method and evaluating its performance, the evaluation often leads 24 00:02:21,860 --> 00:02:28,970 to tweaking or adapting the existing matter or even trying out some new method. 25 00:02:30,830 --> 00:02:34,280 This is the process generally followed for forecasting. 26 00:02:35,240 --> 00:02:40,670 Keeping this process low in mind will help you approach the problem at hand in a structured way. 27 00:02:42,010 --> 00:02:45,030 Now, let's start discussing these tips in depth. 28 00:02:45,260 --> 00:02:45,830 One by one.