Related Questions

Imagine, you are solving a classification problems with highly imbalanced class. The majority class is observed 99% of times in the training data. Your model has 99% accuracy after taking the predictions on test data. Which of the following is true in such a case?
1. Accuracy metric is not a good idea for imbalanced class problems.
2.Accuracy metric is a good idea for imbalanced class problems.
3.Precision and recall metrics are good for imbalanced class problems.
4.Precision and recall metrics aren't good for imbalanced class problems.
Which is an unsolvable problem in access-matrix?
--- in trying to solve the problem.It's clearly unsolvable.
If there are 150 questions in a 3 hr examination. Among these questions 50 are type A problems, which requires twice as much as time be spent on the rest of the type B problems. How many minutes should be spent on type A problems ?
Sohana's mathematics test had 75 problems i.e. 10 arithmetic, 30 algebra and 35 geometry problems each carrying I mark She answered 70% of the arithmetic, 40% of the algebra and 60% of the geometry problems correctly. She did not pass the test as she got less than 60% marks. How many more questions she would have needed to answer correctly to earn a 60% passing grade?
An hour-long test has 60 problems. If a student completes 30 problems in 25 minutes, then the required seconds he has taken on average for computingeach of the remaining problems is
In terms of NTIME, NP problems are the set of decision problems which can be solved using a non deterministic machine in _______ time.
Which of the following problems do not belong to Karp’s 21 NP-complete problems?
Company X, Company Y, and Company Z are mobile manufacturers. They have been in the market for 10 years. Company X has the record of solving all the problems reported by their customers while Company Y and Company Z have the record of solving 80% and 85% of the problems reported by their customers respectively. Which company will have the highest reputation?
For time-dependent problems in FEA, which variables must be specified for each component of the displacement field problems?