Task 6
To start, our belief will start off with our choice of prioritization by due dates. Our knowledge base will include the due date and difficulty of each assignment. If the due dates of any assignment is the same, our prioritization will be determined by the difficulty. So then , our main problem becomes determining what difficulty means and how it is represented in this project. So we did some research, and a very common example of representing difficulty was super mario. The way they measure difficulty and set an order to the levels was by testing and calculating the amount of players that are able to get through the level without losing a life and such. If all the players were able to get through the level without losing a life, the difficulty compared to a level where 1 player lost a life, would be easier since more people were able to complete it without consequence. But this doesn’t apply to our world that well. Another example was calculating the questions answered correctly over the total population. So for example if our difficulty was 80% compared to 5%, the 80% difficulty would be more difficult since only 20% was able to complete this task correctly. While with the 5% difficulty, 95% of the population is able to complete the task. So in this case, if the due dates of the assignments are the same, then our choice would be to do the 5% first since there’s a higher chance of us completing it. To represent difficulty in our world, instead of using percentage and calculating a bunch of random made up numbers, we might just label assignment difficulty as: easy, medium, difficult, and extra credit. If the due date is the same for assignment we can look at their difficulty. So we can choose whether we want to do more difficult assignments or easier ones. We have a few choices we can to do to represent the due dates. We think the easiest might be to separate them into months and days so when we do prioritize, we will first sort the months and then the days. And the due date will be a month and a day. The difficulty of the assignments will be given 4 options, either easy, medium, hard, and extra credit. So the conditions for possible belief revision is either we obtain new assignments, or the due dates of existing assignment(s) is / are changed. The addition of new assignments can be represented by the expansion belief operation, where the new assignment information, knowledge base, is an addition of a non-contradiction proposition to our belief set, the assignments we already have. When the due dates of an existing assignment is changed, it is the revision operation where we add the new assignment due date, and since we already have a pre-existing due date for that assignment, we must edit our belief set to bring our belief set back to being consistent. For example, assignment1 has a due date, say, november 13, but it is pushed back to november 15. We can start off by adding the fact that assignment is due on november 15, but that would cause an issue of contradiction so we must revise and contract one of our propositions, in this case the november 13 due date, since that is being changed to november 15. Our belief revision comes in when we adjust our facts in our knowledge base. So like we mentioned before, revision happens when we either add a new task, or when we adjust the due dates. If we have time we might also consider prioritizing difficulty by different levels after due dates. For example, instead of doing all the easy assignments first, we might consider adding an option to decide which levels we want to do. We can have a thing where it prioritizebyduedate() or prioritizebydifficulty(). Or maybe we just have a thing where it prioritize overall which assumes the user wants it to be sorted by due dates and then by the difficulty from easiest to most difficult and then the extra credit. We will probably have something like addAssignment, or like updateDuedate, and etc. If this is all done before time maybe we can considering adding a point system to see if the order we did was maximizing the order. Originally we wanted to include time in our world but that will be difficult to include considering how we have to think about what time is and how it will effect our world. The most probable might be to have each assignment time cost be determine by the level of difficulty. For example an easy assignment would cost less time to do while a hard difficulty would cost more. We can include maybe a system of time as a currency system where you can trade it for assignment.