Xinxiangxu postgraduate examination: 2023 Tsinghua University artificial intelligence major postgraduate examination experience

1. About school selection and major

The first is the ranking, Tsinghua is undoubtedly top-level, and the AI ranking is also the top;

The institute is in Shenzhen, the climate is very good, I like it. The college and Shenzhen also work closely together, and the hardware part is better than the headquarters, such as dormitories and offices.

Correspondingly, the difficulty of the exam is also relatively large. The school did not clearly announce the number of applicants, and some students speculated from the admission ticket number... 400+ people reported for 23 postgraduate examinations, 48 people entered the re-examination, and 34 people were finally admitted. The score line feels that the reference is of little significance, and after changing 807, I took the exam for two years, and these two years are special circumstances...

The single subject line of the initial test is also relatively high, the English is about 60, and the error tolerance space is relatively small. Professional course 807 is also a more difficult course, it is recommended to read the reference book (Zhang Xuegong's "Pattern Recognition" before applying), and this course is temporarily not tested by other schools, Tsinghua has only been tested for two years, and there are fewer exercises.

2. Initial test experience

(1) English I

The Beijing area is quite pressurized by subjective questions, so it is recommended to focus on objective questions.

It is recommended to memorize the words first, start to divide the question type to look at the class in about June, and then brush the questions accordingly, pay attention, do not write in recent years. Then start to do a set of papers in September, do a few sets to see which section is more wrong, find your own weak links, and then brush the question types of the corresponding part. Brush like this repeatedly until the exam.

I only practiced the real questions and did them a few more times, and I felt that the real questions were enough to cope with them.

(2) Politics

Politics don't start too early, start again in the summer, do Xiao 1000, repeat the wrong topic several times, if necessary, you can find some books with knowledge points, sketch them on them, and have time to take them out. I bought Leg Sister's Sprint Recitation Manual at the time, but this publication was relatively late, so I can find other teachers.

Finally, memorize the big questions to start early, and start to memorize when you get your hands, it is recommended to memorize the big questions of Xiao Si and Sister Leg's sprint paper, memorize them silently after memorizing, and experience the feeling.

(3) Mathematics I

Mathematics first-line algebra and probability theory are relatively simple, and I learned well during my undergraduate studies in high mathematics, so I started with line algebra and probability theory, and then started advanced numbers.

Before the summer vacation, I completed a round of review, using the "Mathematics Review Complete Book", written in the order of probability theory, line algebra, and high numbers, don't keep thinking when you encounter too difficult, put it first, and consider it later.

During the summer vacation, I completed the reinforcement of line generation and probability theory, and also redid the problem of high numbers. Line algebra and probability theory bought Mr. Li Yongle's "Linear Algebra Tutorial Lecture Notes" and Mr. Yu Bingsen's "Probability Theory and Mathematical Statistics". I first redid the wrong questions in the chapter of the "Mathematics Review Book", then wrote the corresponding chapters of the two intensive books, each chapter was written in the order of the wrong questions - the reinforcement book, and then summarized the corresponding question types in this chapter. Then I redid the mistake of high numbers and did not buy the high number reinforcement book...

Then I will continue to do the questions and papers, and the specific arrangement depends on the needs of each person. After the completion of the reinforcement, I first began to do the early real questions and Mr. Zhang Yu's 8 sets of papers, strictly according to the time of the postgraduate examination, and then found that many would not... In October, I bought 108 questions from Mr. Li Lin, and the quality is very high! Highly recommended! Then I continued to set the papers, there were 6 sets and 4 sets of real questions and Mr. Li Lin, and I also bought the papers of Hegong University, and looked at the question types summarized before after eating every day.

In the last month, I did the wrong question again, and I had to do the paper, and I did it again after the real question, but I only did it for the last 5 years, because I ran out of time...

(4) Pattern recognition 807

In fact, the subject is called Basic Information Technology Comprehensive (807), but the book given by the syllabus is "Pattern Recognition" by teacher Zhang Xuegong...

23 The syllabus is the third edition, but the fourth edition has been out for a long time, and it may be changed in the future, so you must take a look at the syllabus when it comes out.

In addition to "Pattern Recognition", I also recommend the watermelon book, so you can read it when you have time. Pattern recognition feels more difficult, it is recommended to start learning early, some of the knowledge points in it can be read the fourth edition and the watermelon book, different books may be slightly different.

Another point to note is that this course has been taken for two years, and the question type score is not fixed. 23 Judgment, single choice, multiple choice and big questions are examined, and are used for reference only. I took the first year and did not take the exam in the second year, but I still have to prepare, and it is better to memorize it early. If you memorize the book according to the syllabus, other books may not necessarily be wrong, but the back of the book according to the syllabus is the safest.

23 took a small number of electricity, which is quite disgusting... However, the knowledge points involved are also relatively simple, so the preparation for the exam is still mainly based on pattern recognition. In case you take another subject, rely on the basic skills of the undergraduate. In fact, the super-class is about 5 points, don't worry too much, from the 23 admission results, 140+ two or three people, 130+ about 10 people, do not need to worry too much about the impact of the super-class questions. Try to score points when you encounter it in the examination room, and then pass, the focus is still on the top of your own will.

In terms of timing, I went through the textbook twice from the beginning of the year to the middle of the summer vacation, and then took notes, that is, mind maps, etc., and then read them repeatedly, but I still didn't understand it. Then there are the questions, there is no complete set of exercises in this course, you can do book example problems (focus), watermelon book exercises, and then the final papers of each school, and the process of finding is also quite laborious... CAS Kaobo is also pattern recognition, which can be found. I often find that there are many knowledge points that are not in the book, just... It's quite annoying. There is another problem, the table of contents of different books is different, maybe the content of the second chapter of Zhang's book is the third chapter in other books, and the exercises are misplaced. Therefore, it is recommended to read the textbook at least once before doing the questions, so as to know whether the questions are the knowledge points in the book... I think it is good to see more knowledge points, you can get higher scores, but this is very low, grasp the content of Zhang Shu should be the main work, do not indulge in the expanded content of other books.

Around the beginning of school in September, I started memorizing noun explanations. There are more chapters in the first few chapters, so it is painful at first, and there are fewer chapters in the later chapters. I memorized and reviewed it on the side, such as memorizing the fourth chapter today, and I have to review the first chapter by the way. Overall, it's easy to memorize 3 or 4 times. I began to write silently around October, and at that time it seemed that I had only memorized it twice, on the one hand, I was afraid that I would not be able to write, and on the other hand, I was afraid that I would be stuck, that is, I could memorize, but I suddenly forgot when I wrote.

In mid-September, I started taking my own exams every week, using the collected sets of papers, taking the exams according to the time of the postgraduate examination, and then grading them myself. In fact, there is a lot to memorize this course, and there are relatively few calculations, so it is recommended to take more time and review it repeatedly. The content of this book is still a lot, but also relatively scattered, it is recommended to make a mind map yourself, connect the knowledge points, it will be good to memorize. Some calculation problems also have more formative steps, which should also be remembered.

3. Retest experience

The retest is generally divided into English and comprehensive, but the comprehensive interview also has English questions and answers.

The English interview process is to take a copy of English, read the full text, and then start translating. Be sure to find your own materials to try, and the materials can search for popular science articles from Stanford and other universities.

There is a little trick, AI actually many things are literal translations, such as machine learning, which is translated as machine learning, do not pursue how elegant, elegant may be wrong... I recommend recording and listening to how well I read it, whether I will stumble, especially the interpretation, which I was miserable at first, but then I could barely do it.

The English interview questions are based on the material drawn, such as summarizing the entire paragraph, how to translate a certain word, or the teacher asking questions based on this paragraph (the teacher will prepare the questions in advance). When you practice by yourself, you can interpret the summary, and then try to explain the words that you can't in English, that is, guess in context... Questions can also be thought of for yourself, how to ask, in general, translation is fundamental, can translate is not a problem.

Then there is the comprehensive interview, the English of the comprehensive interview is very random, clustering, support vector machine and everything may be asked, but still based on the basic concept, you can memorize the English translation of the first test name, in fact, there are not many, remember proper nouns, such as clustering, SVM (full abbreviation must know) and so on. If a word has multiple translations, it must be, and what the teacher said during my interview was different from what I was used to expressing... I was used to the first abbreviation, the second one the teacher said...

Bring your resume to the interview, and the teacher will ask questions based on the resume. Resumes generally write about subjects that they have scored high, such as self-control, signals, electricity, etc., and the teacher is likely to ask you about these subjects, so you must look at what you write, not deeply, but with a large breadth. Also, life questions will also be asked, such as your hobbies or something, these questions are sincerely the main point, but also pay attention to it, playing games and other hobbies temporarily put aside:) There are summary life questions on the Internet, you can find it, and then write your own answers, don't copy all the answers on the Internet, ask two more questions and show the stuffing.

4. Miscellaneous

The process of preparing for the exam is actually very difficult, especially the 807, and I still don't understand it at the end of the summer vacation, but there was only one thought at that time, that is, to find a way and take the time to understand. Now that I'm admitted, it feels like a dream.

The entrance examination is a hard project, it takes time and energy, so go all out when you have the goal in mind, and look forward to our meeting in Qingshen!

(This article comes from the original article of Xinxiangxu, and cannot be reprinted without permission!) ）