problem description recently plans to develop an intelligent chat robot, similar to jd, intelligent customer service on Taobao, more questions and answers currently there are 100w question and answer data in mysql. When users ask a question, they h...
recently, I want to process the form for analysis. Due to the lack of experience in dealing with sql or csv, I have encountered the following problems and asked to solve them: question 1: companyID fresh 23865 13-2 23866 10-3 23867 8-...
ask the gods for help. original data: 1 192.168.106.10 1 192.168.106.16 3 192.168.106.11 2 192.168.106.3 2 192.168.106.8 2 192.168.106.6 how to reorder the combination and return it into a dictionary in the following format: {1: [192.168.106....
how to query data in B dataframe according to the ID, of A dataframe in pandas, An and B tables have the same ID column. Similar to SQL s column-level subquery: select * from t_class where c_id in (select c_class_id from t_student) , An and B have an o...
from pyecharts import Pie attr = [ 2dlots, 3d ] v1 = [12,5] pie = Pie ( "Chinese 2017 movie visual type ratio ", title_pos= left ,title_text_size=15,width=1000,height=350) pie.add ( ", attr,v1,center= [50,60], radius= [0,80], is_label_show=Tr...
how can a data analysis project be versioned effectively? where version control is required and which is not. how to manage the charts generated in the data analysis project. ...
suppose there are 100 questions on a test paper, each with a score of 1 out of 100. Each question has four options (all single-choice questions). now many people have done this paper, and we have all the answer information and scores. Note: we do not k...
Table 1 add column matching Table 2 key _ word, if Table 1 add contains Table 2 key_word, write group, in Table 1 column 4, if not, mark "not included ". PS: I also measured with iteration, Cartesian product also tried, but did not achieve the desired ...
such as question: how to set chunksize and shape? of dask.array the code is as follows >>> x = data.values >>> x dask.array<values, shape=(nan, 24), dtype=int64, chunksize=(nan, 24)> >>> y = data[ label ].values >...
my purpose is to obtain an array of latitude and longitude coordinates for the whole country or a province or city, and these coordinate arrays are separated by 3 kilometers. (in other words, draw a circle with a radius of 3 km, approximately filling th...
coding can be implemented in all four of the above methods. What s the difference between them? Of course, the length of the script is different. I can already see it. < H1 > get_dummies method < H1 > df7 = DataFrame({ key :list( bbacab ), ...
problem description there is a video playback problem with WeChat Mini Programs s embedded h5 page. After playing, there is a sound after clicking the dot in the upper right corner to exit, indicating that Mini Program H5 video playback is not turned...
problem description The nodejs event loop is executing the callback function. When a request comes suddenly, how does nodejs run? one of the two threads executes the fallback function and the other processes the request? Or the callback function that ...
The project has multiple development branches, for example: master, dev1, dev2, dev3, I modified a hundred lines of code on dev1, then pushed it to origin dev1, , then I checkout master, and then the computer cpu was full, and the computer was very stu...
compiling openjdk under mac environment appears-sharpinclude < new > header file is missing environment xcode10, it is said that because libstdcPP was deleted later by xcode10,-sharpinclude < new > just need to copy Applications Xcode.app Contents D...
JDK1.7,tomcat8 starts the web3.1maven project to report an error Could not resolve XML resource [null] with public ID as mentioned! Tomcat7 certainly can not be used, 8 words to report this mistake, inexplicable! ...