User behavior sequence modeling iQiyi user behavior sequence modeling Article directory User behavior sequence modelingPreface1. Competition background2. Feature extraction1. User behavior sequence feature extraction2. User attribute feature extraction 3. Modeling4. Summary Preface The user retention prediction competition organized by iQiyi predicts how many days users will log into the app in th... »
Bellman optimal equation Table of contentsReview + SupplementLogical scene setup Bellman optimal equationOptimal strategy and optimal value functionoptimal state value functionOptimal state-action value function A small digression – maximum/expected valuesThe relationship between the maximum value and the expected value The relationship between optimal strategy and two value functionsBellman... »
Article directory PrefaceGerchberg-Saxton AlgorithmFienup AlgorithmWirtinger Flow AlgorithmDouble Phase Coding AlgorithmDouble Phase Amplitude Algorithm Existing doubts: When using ASM to implement ITFA, is it necessary to add a Fourier lens to the physical implementation? There is no need to use ITFA based on FFT2. When using FFT2, the reconstruction effect is good, but it is not suitable for the... »
YOLO series—YOLOV7 algorithm (1): Use custom data sets to run through the YOLOV7 algorithm Isn’t this embarrassing? . . Just after I understood the YOLO V6 algorithm from Perfect Group, V7 came out. . . And the most important thing is that V7 is also endorsed by the author of V4. Fortunately, both V6 and V7 are modified codes based on YOLO V5, so the code reads more smoothly. The YOLOV7 algo... »
Article directory 9. Generalized table – Generalized table concept, storage structure, depth/length, copy algorithm9.1 Basic concepts of generalized tables9.2 Storage structure of generalized table9.3 Depth and length of generalized tables9.3.1 Length of generalized tables9.3.2 Depth of generalized tables 9.4 Copying generalized tables 9. Generalized table – Generalized table concept, ... »
The first official competition between three people and one computer, a weak team and an even weaker captain wwwww To be honest, I always thought that in this kind of competition, except for a few check-in questions that do not require algorithms, the rest are nested algorithms and data structures. However, this competition seems to have a lot of thinking questions, and the level of thinking is st... »
Niu’s academic circle Question description Driven by her love for computer science and the temptation to one day become “Dr. Bessie,” Bessie the Cow began pursuing a PhD in computer science. After a period of academic research, she has published N papers, and her i-th paper has received ci citations from other research literature. Bessie heard that academic achievement can be mea... »
💁 Homepage:Huang Xiaohuang’s blog homepage ❤️ support me: Like, collect and follow 🎏 motto：All miracles start from sometime somewhere, make it right now. This article comes from the column:JavaSE from entry to proficiency Article directory 1 User thread and daemon thread2 How to set a thread as a daemon thread?3 The 7 major states of threads3.1 Why do we say 7 majors instead of 6 majors?3.3 ... »
In the 2022 1024 card event, how do programmers judge whether their cards can form 1024? Then have fun programming! If you already know this activity, just skip to the code. Similar to last year, this year’s Likou held the 1024 Programmer’s Day event. The event address ishttps://leetcode.cn/2022-1024/ The activity guide ishttps://leetcode.cn/circle/discuss/OV9VUd/ Let me explain first,... »
I reviewed graph theory before the exam and found out that the question was greedy 1. Queue to receive water 【Problem Description】 There are n people queuing up in front of a faucet to receive water. If the time for each person to receive water is Ti, please program to find an order in which the n people queue up to minimize the average waiting time of the n people. 【Input format】 The input file h... »
