This is the morning. Li went to work to organize documents and prepare for tomorrow's meeting. Yesterday I bought and join the Mr Zhong's online living class/sources. It's interesting , but I don't like it so much. It's a little too theoretical and lack practical experience. It contains many knowledge about the language of Chinese and English. We learn language to use them, not to show off. There are many useful information in his sources. It needs to learn. The knowledge has a somewhat fragmented, and there is no need for systematic learning. You can follow him to learn some interesting explaining of the words.
>> 碎碎念 muttering

I went to the Vehicle Safety Inspection Center to handle the annual inspection of the car yesterday afternoon. I forgot my ID in home .So I went back to get them. So I went to the center twice. It's not too far. It costs 10 minutes from my home to the center by car. I spend 360 yuan for the annual check report. last time it cost 270 yuan. The price has gone up.
>> 碎碎念 muttering

Yesterday afternoon, I went to the building of Zhangjiawan fuhuaqi ,it's like some startup incubator. I saw their office on floor 5, it's 62 square meters, it costs 3000 yuan/month. The staff who received me is a lady, she put on a lot of makeup. That made her face very white. But I can say her skin is not good. She told me I can have a discount of 100 yuan less per month if I rent for half a year at once or enjoy a discount of 200 yuan less per month if I rent for a whole year at once. That's a lot of money for us .We need to think about it carefully. There are 32 square meter room , but it's not available now. They all have been rented. She told me if I can wait, maybe after some time, I can rent one. It costs 2000 yuan/ month. This kind of office room is at the end of the aside, only 3 room. one floor one this kind of room. I told my partners if we have the project to do , maybe we could consider the office in the building. This building is very close to my partner's home. He can walk to there. I can go to there by electric scooter, it's about less than 4 kilometers. after the visit ,I went to the changli building on the way to bus stop. I got some free jasmine tea and ginger tea at the front of the building. it was provided by a hotel. The jasmine tea is cold, I only drink a little. The ginger tea was in a insulated container. it's warm and tastes good. yes I drank more of it. when I was home . I did some office work. and cook dinner. after dinner I made the steamed bread or steamed bun. I was tired in the evening. The body is tired , but my brain is still very active. I need to do some work, so I made the steamed bun. I asked my wife to have a look of the steamed buns. She asked me how I can made them so round. I smiled. In the morning my kid watched the steamed buns, he also gave the affirmation. These steamed buns are pretty good.
>> 碎碎念 muttering

Uh, today I leave the company. Um they let me go.I have nothing to say. It's the good time,it's the bad time. Sometimes something you don't want,But when they lose you feel sad. Maybe the people Who I worked with. I didn't have new colleagues for a long time. I also feel sorry for them. I could be a good colleague and a good employee for the company. But I can't fit in the team and can't do well with the manager. I always think I'm the manager. I struggle to fit in the group. I'm not comfortable with this type of job. I'm not cut out for this job. This job doesn't suit me. I remain appreciate them.
>> 碎碎念 muttering

Submit the report of no criminal record and healthy card to get the worker number or employ ID. It's convenient. You can get them both online.
>> 碎碎念 muttering

This operator converts a grouping field with many buckets into a lesser number of only the available buckets, making working with grouping fields computationally efficient. The example below will clarify the implementation. Example: Say a grouping field is provided as an integer (e.g., industry: tech -> 0, airspace -> 1, ...) and for a certain date, we have instruments with grouping field values among {0, 1, 2, 99}. Instead of creating 100 buckets and keeping 96 of them empty, it is better to just create 4 buckets with values {0, 1, 2, 3}. So, if the number of unique values in x is n, densify maps those values between 0 and (n-1). The order of magnitude need not be preserved.
>> Operators

为什么删不掉post了？关联request and audio. and audio's file, we need to delete all of them. the audio files only store in local server.
>> 事项 Creative platform

Group neutralization standardizes values only within defined groups. The most representative example is industry-based neutralization available in Settings. By dividing into industry groups and standardizing within them, you can neutralize industry-based Alpha performance in your simulation. Beyond industry neutralization in Settings, BRAIN allows group neutralization using various group data and the group_neutralize operator.
>> worldquantbrain_2

ts_rank(x,d): Ranks x values for each stock over the past d days and distributes them on a 0-1 scale, similar to rank(); ts_zscore(x,d): Shows how far today's x is from the d-day average in standard deviation units (Z-score); ts_mean(x, d): Returns the average of x values over the past d days;
>> worldquantbrain

Let's create an Alpha using Enterprise Value (enterprise_value) and EBITDA. Try creating an Alpha using your preferred comparison method. The most straightforward approach is to simply calculate EV/EBITDA for each company and rank them, with lower values potentially indicating more attractive investments.
>> worldquantbrain

Let's set entry conditions. Based on the hypothesis that momentum works when volume surges, we can detect volume increases using these methods: volume > adv20 #adv20: 20-day average volume volume > ts_mean(volume, N_DAYS) volume * vwap > ts_mean(volume * vwap, N_DAYS) You can test different values for N_DAYS. Since momentum is a long-term effect, it's effective to set the exit condition to –1 to keep positions longer once established. Or you can set your own exit condition which you think is effective. Also, since momentum effects tend to occur across industries rather than within them, it's better to set Neutralization options to avoid overly detailed grouping such as Market or Sector.
>> worldquantbrain