Essentially: We use naive bayes (although he didn't really set up the question), and sometimes the probabilities don't work out when there is no data in the area we are looking.
Data Mining Specialist Interview Questions
372 data mining specialist interview questions shared by candidates
1 - As a Researcher what are the ways through which you can retrieve Unique records in SAS data set Answer: NO Dupkey (As Unique means something which is not repeated) 2 - As a Researcher you have been assigned a task of merging two separate data sets . What is the most important condition which has to be kept in mind for merging two separate dataz using a command Proc Merge. Answer: There is no such command known as proc merge as merging can only be done in a data step and not in Proc step 3 - What is the most important statement in a data step whose placement is very critical? Answer: Length statement as it has to be placed on top so that length of characters can be taken. If you give a length statement in the bottom then length of characters will not come. 4 - There is a data which has 500 observations and you only have to research on Observations from 27 to 45 so what command will you use? Answer: is Use of Conditions in combination with _n_ as its an automatic variable & question specifies Data has 500 observations and you shall specify if 27 greater than equal to _N_ and less than equal to 45 . & also can be done by 1st Obs & last Obs. 5 - As a researcher can u also use a substring function to read data from Left to Right ? Correct Answer: Only Scan can be used 6 - Why is a sum function preferred over a + operator..? Correct Answer Function shall consider the Missing value as zero and give the answer whereas + operator shall not give answer 7 - If you were given several SAS data sets you were unfamiliar with, how would you find out the variable names and formats of each dataset? Correct Answer: is Proc contents 8 - How do you remove only the trailing Blanks in SAS (Trailing Blanks mean blanks which are one after the other)? Answer: Its through COMP BL command it is compress and keep the Blank 9 - what items are created while processing any Data in sas? Correct Answer - Observation & Variables
Tell me about one event that you make a positive change to the team
They ask me query of second maximum salary in SQL I write down the right one but they said it's wrong and the interviewer wrote down the wrong the one
What is BOD & COD ?
Few of the programming question/puzzles were tricky. Most of the question originated from the work i did for previous company, so they were easy to handle
what kind of job are you wanting?
The questions pertains to the previous projects that i have done in fields of NLP and ML.
Tell me about your project? What is Statistical Modelling? Are you familiar with R, Python?
tell me a bit about yourself
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