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Recently, encountered this question in an interview. Given a data with million rows and 5000 features,how can we reduce the features? It's an imbalanced dataset with 95% positive and 5% negative class (other than using dimensionality reduction techniques)
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Anonymous 4 months 0 Answers 87 views

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SQL Case Study: Social Media Features: Country: Country Rank: Rank Account: Account Title: Title Link: Instagram Page Category: Category Authentic Engagement: Authentic Engagement Engagement Avg: Engagement Avg Scrapped Date: Scrapped Date Data Set: Excel File (Link: Click Here)
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Anonymous 8 months 0 Answers 157 views

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SQL Case Study: Social Media Features: Country: Country Rank: Rank Account: Account Title: Title Link: Instagram Page Category: Category Authentic Engagement: Authentic Engagement Engagement Avg: Engagement Avg Scrapped Date: Scrapped Date Data Set: Excel File (Link: Click Here)
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Anonymous 8 months 0 Answers 124 views

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SQL Case Study: Social Media Features: Country: Country Rank: Rank Account: Account Title: Title Link: Instagram Page Category: Category Authentic Engagement: Authentic Engagement Engagement Avg: Engagement Avg Scrapped Date: Scrapped Date Data Set: Excel File (Link: https://drive.google.com/file/d/12_SVXe7VO-53DJ14IJZilLfpiNWTbUUW/view?usp=sharing)
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Anonymous 8 months 0 Answers 128 views

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I'm a blogger at Eagle Eye Protection, where we serve our customers with pride and honesty. To better serve you, we created our business with the idea and style of American culture in mind. If you have any more questions, ...
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11 months 0 Answers 179 views

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Read a very detailed and well-written blog about Tuples in Python. on Scaler topics.   Want to understand scenarios where tuples preferred to lists in Python?    
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1 year 0 Answers 216 views Newbie

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I'm learning about Tuples in Python and want to know how to fetch a sub tuple from a collection by slicing it from a start index and a stop index
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Anonymous 1 year 0 Answers 189 views

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Table - Incidents Column Date_of_incidence , incidents Get the start date with the longest period without any incidence  
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1 year 0 Answers 700 views Grand Master

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Q: We have a product. It’s screen and event data is as below: Screen Name  Event Name  Timestamp A                        1                      ...
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1 year 0 Answers 307 views Newbie

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Q: We have CUSTOMER table having columns as Customer_Name, Merchant_name (Amazon, Flipkart, Myntra etc.) and Transaction_value (Purchase value for each of these merchants). Write a query to Transpose this into Customer Name, Merchant Names as individual columns and their transaction ...
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1 year 0 Answers 344 views Newbie

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Q: We have a CUSTOMER table having columns as Cust_ID, Month, Sales_value. Write a SQL query to add the missing months for each customer and to have sales value = 0, corresponding to those missing months which are added
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1 year 0 Answers 318 views Newbie

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Assume you are given a table for spending activity by product type which has column names as order_id, user_id, product_id, spend, date . How to write a query to calculate the cumulative spend for each product over time in chronological ...
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Anonymous 1 year 2 Answers 316 views

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Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.
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2 years 0 Answers 212 views Great Grand Master

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You are given a set of n types of rectangular 3-D boxes, where the i^th box has height h(i), width w(i) and depth d(i) (all real numbers). You want to create a stack of boxes which is as tall as ...
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2 years 0 Answers 191 views Great Grand Master

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Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value. If target is not found in the array, return [-1, -1]. You must write an algorithm with O(log n) runtime complexity.
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2 years 0 Answers 187 views Great Grand Master

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Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string.
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2 years 0 Answers 189 views Great Grand Master

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Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. You may return the combinations in any order. The same number may be ...
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2 years 0 Answers 285 views Great Grand Master

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Given a rod of length n inches and an array of prices that includes prices of all pieces of size smaller than n. Determine the maximum value obtainable by cutting up the rod and selling the pieces. For example, if ...
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2 years 0 Answers 224 views Great Grand Master

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Given n dice each with m faces, numbered from 1 to m, find the number of ways to get sum X. X is the summation of values on each face when all the dice are thrown.  
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2 years 0 Answers 187 views Great Grand Master

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Describe a project you're proud of If I interview your PhD advisory, and I invite him/her to describe your strength and weakness, what do you think he will say.
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2 years 0 Answers 204 views Great Grand Master