Thursday, July 29, 2021

Issue with Techgig's Question of the day - shows fail for right output for code submission

 



Issue found with today's techgig challenge :

Even if the testcase output matches the expected output  , the console shows a "Fail" as Execution Log while Submitting Code.

In the left panel one can see that the submission with "custom input" however shows a pass .

Regular Expressions in Python | Scenario - Finding sub-string match patterns to validate a genuine number from a numeric string using Regular Expressions and search() method in Python | Conceptual Infographic Note

 


Case 01 : Ascertaining a positive match using "\w" to match a specific phone number to a generic string


Case 02 : Ascertaining a negative  match or mismatch using "\w" whether a  match over given string occurs or not

Friday, July 23, 2021

Features of NoSQL Databases and their Usage for Analytics | 5 Conceptual Questions and Answers | Concept Infographic Note


 

Topics discussed in the post the following questionnaire :

Q1) What are some predominant features of No-SQL databases ?

Q2) Why NoSQL is called "SQL with a No " with "No" as the preceding string on SQL ?

Q3) How do organisations leverage NoSQL data for their businesses ?

Q4) Where are NoSQL databases useful ?

Q5) What do you mean by the statement , "The constraints of a relational database are relaxed ? "

Difference between RDBMS and NoSQL databases | 10 Conceptual Questions and Answers | Concept Infographic Note




Questions and answers discussed in the post:
Q1) What are the different ways in which RDBMS databases differ from NOSQL databases?
Q2) What are the Applications Level feature supported by RDBMS and NoSQL Databases ?
Q3) What are the principles of RDBMS and NoSQL type databases ?
Q4) Explain about Availability aspect of RDBMS and NoSQL type databases ?
Q5) What is the data velocity supported over RDBMS and NoSQL databases ?
Q6) What do you mean by Latency . What happens if Latency is High ? And what happens if Latency is Low ?
Q7) What is the data volume supported over RDBMS and NoSQL databases ?
Q8) What are the data sources present over RDBMS and NoSQL databases ?
Q9) What are the different data types that are present over RDBMS and NoSQL ?
Q10) What are the different data accesses that are present over RDBMS and NoSQL ?
Q11) What are the different technologies that are supported over RDBMS and NoSQL ?
Q12) Write about the cost aspects of RDBMS and NoSQL





Examples of Using "JOIN" function on Python Data Structures | Sample Conceptual Questions with Answers with examples | Infographic Note

 


Example - 01 : Joining Numeric List Elements with char string

Example - 02 : Joining Tuples with character string

Example - 03 : Joining List elements with long string

Example - 04 : Joining Character List Elements with long string

Example - 05 : Joining Character List Elements with null string


Introduction to the concept of "Term Frequency - Inverse Document Frequency (TF-IDF)" with 3 general questions and answers | An Infographic Note

 


More on this at : https://towardsdatascience.com/tf-idf-for-document-ranking-from-scratch-in-python-on-real-world-dataset-796d339a4089

An Introduction to Classification Algorithms with 10 fundamental questions | An Infographic Note with questions and answers

 



Questions Covered :
Q1) What are Naive bayes Classifiers ?
Q2) What do you mean by Probabilistic Classification ?
Q3) What do you mean by Statistical Classification ?
Q4) Give an example of Statistical Classification .
Q5) What is a Classifier Algorithm ?
Q6) Give some examples of various forms of classification .
Q7) Which is the most used Classification algorithm in Statistics ?
Q8) What are some of the characteristics of a Classification problem ?
Q9) What are the popular acronyms for samples , independent and dependent variables in Machine learning (ML)
Q10) What is the difference between Binary Classification and Multiclass Classification ?