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Alright, so thank you for coming this video. So this is the introduction of the machine learning for, no sorry, mathematics for machine learning, SUP506. And then my name is <PRESIDIO_ANONYMIZED_PERSON>. I'm a reader at Human Language Intelligence Lab. So the purpose of this course is to learn the basic on mathematics for machine learning. And then in time, it's Wednesday, it's 4.30 to 5.45. Yes. It's one and a half, right? Why? That's because this is a pre-learning. So you can watch videos and then get the contents of the weekly part, lecture. Then in during that time, Wednesday 4.30 to 5.45, we actually have Q&A session. Sometimes I also say some more important, not important, actually kind of the interesting part. But anyway, so it's like a pre-learning. So we will do the online lecture and then in-person lecture. Alright, then the course website is iCampus and then the background assumes the basic of mathematics. Yeah, so I think you already know what is a plus and what is a negative and what is a multiply and what is divided by. Alright, here this is the course policy. Any violation of academic integrity will result in F in the course. So I believe you already know what is academic integrity. So I don't want to say details, but if you wanted to know that one, then please visit this website. Alright then the textbook of this course is mathematics for machine learning. Yeah, that's the same part, right? So you can visit this website to get the PDF of the text. That's the reason I choose this one as a textbook. Alright then here these are the course structure, but it's a tentative one. So it might be changed, but the important thing is the midterm exam and then the final exam. Right, so there are four items in grading. So the first one is attendance. So it's a 20% one. So it's a 10, but it requires 10 weeks and more out of 12 weeks. Oh really? We don't have exams. Right, there are, oh sorry, we have 16 weeks, right? So 16 weeks, but these two things and then 13, alright. Then 16 negative 3 means 13 weeks, right? So we have 13 weeks out of 10 weeks and more out of 13 weeks. So that's, I think it's enough to get this one, three more chances, right? Then this one is very important. Why? That's because in the SKKU school, students must attend at least 304. 304 is a little bit harder to compute. So that's the reason I said that 10 weeks and more, that's the kind of rule of this course. And the second one is the quiz. So it's a sum of top 10 scores. It means that there are 13 quiz, right? Then you just count only top 10 scores when we sort it as a number of scores. And you have three more chances to get the full score, the quiz score, right? Well, however, you will get a general score on a week quiz if you do not attend the class. Yes, attendance is very important. And then third one is the midterm exam and fourth one is the final exam. There are no assignments, but exams are, I think it's enough to measure your understanding of the mathematics. But here, with midterm exam, there is no kind of the criteria. So for the final exam, there are two things. The first one is that you will get a general exam score if your attendance score is not poor. Yes. So that's very important. The second one is that you should take the final exam, otherwise you will get an F grade. Yeah. Why? So in the school, as you know that, a grade of F shall be given in the following cases. So who are unable to take the final examination due to other circumstances. So other circumstances means that if there is a reasonable reason, such as family funeral or the first training, something like that, then you might have a chance to take the final exam. Otherwise, you should take the final exam. If not, your final grade will be F. So let's look at the examples of this grading. So there are two students, student A and student B. Then student A's case, so his or her attendance score is 18%. And then the final exam score is 90 over 100. But because of this one, not full score, then his or her final exam score will be zero. And then final grade itself is measured by the base, measured by the total score, maybe attendance, midterm exam, and then the case is something like that. And then when we look at the student B's case, the attendance is 20%. It's a full score. However, he or she did not take the final exam. Then no matter what it is, his or her final grade will be F. Yeah. Right. So then let's look at the attendance part. So to take the attendance score, please come to the in-person classroom on time and check your attendance using my SKK attendance app. How can you install it? So please visit this website by your smartphone, then you can easily get the application. And then the attendance time tracking standard is 4.30 to 5 PMs. I mean, Wednesday. So you need to come to the classroom during this time and then using your smartphone, you can check your attendance by yourself. All right. Then here are the more rules and tips. No late in. Yeah. Only this time. And no excuse except the reason for reasons such as entering a hospital, family funeral, and then reserve force training with official documents. Yes. So why this one is important? So we do not accept any excuses, but if that one is quite reasonable, as I said, this kind of example, then you can bring your official documents. Then yeah, you can get the attendance score of that day. And then please check your attendance scores by yourself. And actually, what is the meaning of this one? So sometimes your smartphone is not working well, or sometimes the system in the classroom is not working well, right? Then if you use the smartphone to check your attendance, however, sometimes it's not recorded. So it's my tip. So after you check your attendance by yourself using your smartphone, then please visit this website by your laptop. Once again, then see whether that one is recorded or not. Then if not, and if that one is not working until the Q&A session, then please come directly after lecture time. I mean, you know, during time, right? If you meet any problems, then we might accept your claim if we can't see you during that time. Yeah. It means that it is hard to accept your claim like this. So I actually attended last week. Sorry, I cannot remember your, because one week it's gone. We're gone, right? So please check these rules and tips and then please do not make a little bit bad situation. All right, then let's look at how we communicate practice. So there are three channels, the classroom, email, and office hour. So it means that the other channels, such as, I don't know, other channels, but instructors and TAs will ignore other channels. So this is one of the part for the email, because classroom itself is quite easy. However, you know, the students can ask the question via email. However, some emails will not get answered. So the left one itself is a screenshot of the real email and then right one is translated version. So let's look at it. So the subject of this email is inequality about finite exam scores. Dear Professor Xinyangba, I'm sending you an email to an inequality about the finite exam score. Could you check the score for the question number four? I'm not sure if it is because of the typo or what the problem is. Please. Thank you. All right, then what's the problem? What are the problems in this email? So the first one is that, I don't know exactly who was it, but anyway, the sender did not mention about himself or herself. Yeah, there is no student ID, there's no name, then how can I know that? The second one is that they also do not mention the course name or the course code. Actually, the course code is much better. Why? That's because actually in this semester I will teach four classes. Yeah. And then every class will take the final exam. How can I know that? All right, and then the third one is that, you know, the claim itself is too simple and too naive. Well, actually my original reply of this email is like that. I've checked and there's no problem. All right, so you develop to mention, you develop to write the specific part and then evidence for your claim. And especially, so the final exam, we will also open the final exam claim time. Yes, that's the reason. So 15 weeks is the final exam and 16 weeks is the final exam claim. Yeah, so you can claim the final exam during that time. However, he or she did not attend it then and send the email to me then. It's hard, right? So anyway, what I wanted to say for the email, please use school email account such as skkedu, g.skkedu or the authorities5.skkedu. Why? Using that one, we can know that you are an SKK student and then please send an email to me. And then this is not the only reason why I recommend his email, school email account. Sometimes my email system, especially spam filtering system is not working well. So sometimes they just classified some mains as spam. And sometimes if that one is written in, if that one is sent from the gmail.com, neighbor.com or hotmail.com and whatever, you know that these are quite ordinary email account system, right? So that's the reason sometimes they just treat it as spam. But I actually add rules that if a sender use these email accounts, then if even if a little bit weird contents are written in, it's not a spam. Yeah, I mean, it means I just trusted these three, you know, the email accounts. So sometimes I cannot see, I cannot read your email because that one is classified as a spam if you send from if you're using the Gmail or neighbor. So you'd better to use the school email account. All right. And then the in the subject, please provide a header with the class code to mention that you are taking this course. Then what's the class code? So the class code is SUP5006. Yeah, please write this one. If not, then I might ignore your claim. And then summarize what you wanted to ask in the subject. All right, then the contents. So in the contents, please introduce yourself with a certain ID number and the name and the be polite, be spasty and provide as much detail as possible. Yeah, so this is kind of the guideline. And I actually believe that you are a graduate student, you already know these kind of things. But if not, it's time to learn about this manner. And you're using email. All right. And then the students can ask the questions in person, but they needed to reserve time. How can you do that? So please visit this website and then reserve the slot, the empty slot part. But the reservation itself may be canceled because of my schedule, but don't worry about it. So I will send an email to you to set up the new appointment. All right, then let's look at the assignments part. So it's a simple report, an approach of this course, and then the suggestion and comments to the instructor. But this is the optional one. The deadline is September 11th, and then please submit the report to iCamp page. All right, and then this is the optional one and it's all for privacy. So what is it? Actually, so we will open a grading sheet that has all scores of the score of students. Actually, we will use Google Doc. So it means that it's like a table, you know, like Excel. And then so student A, student B, student C, and student D, and then score something, score something, score something, something. And then these values are open. So then it means that everybody can see these scores. So to protect your identity, we anonymize your student ID by SHA-3256 hash function. And if you do not know what is hash function, then please search in Google. And then for enhanced security, so we will add your own sort value. So add means actually concatenation. So what is the sort value? So you can also see that one in this Wiki article. And then the process of this part is like that. So the input is student ID plus your own sort value. So the plus means that the concatenation. Yeah, for instance, so your ID, student ID is 202412356, and the sort value is 9876. And input for this function is 202412345609876. Why zero? Actually the sort value itself in this part is up to five digit. But use a sum in the four digits, right? So I actually add zero and then to make these five digit one. But anyway, so that's the input. And then using the SHA-3, then that one converts this input as the one of the encoded character sequence like that. So why we and then that one will be shown in this Google sheet. Why? Actually, this is the characteristic of the SHA hash function. It is hard to convert from up to input. Yes, I mean restore. So that's the reason it is used in cryptography. Right, security part. Right, so the due date is September 11th, that's the same. And then submit your individual sort value number to iCampus page. But here, remember, please remember that one. You know, the sort value itself is a kind of a secret key between you and me. So if you do not remember your sort value, then it is hard to find your scores in the Google sheet. So please remember that one carefully. And then if there is no submission, that's okay, no problem. But it means that no sort. No sort means that if the strength ID is this one and no sort, then the input of this function is 202412356. Yeah, that's all. Then output will be changed. Anyway, so what I want to say is that it still uses the SHA-3556 output in the Google sheet. However, as I said, for increasing the security, then you do better to submit your sort value. All right, yeah, so that's the end of the introduction video. So thank you for registering this course. So it's mathematics for machine learning. So I guess you have a great time in this course. Yeah, in this semester, I hope actually. All right, so thank you for watching this video and then I hope to see you in the classroom. Yeah, bye bye.