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What is Cosine Similarity?
Cosine Similarity is a measure of similarity between two vectors that calculates the cosine of the angle between them. Similarity ranges from −1 meaning exactly opposite, to 1 meaning exactly the same, with 0 usually indicating independence, and in-between values indicating intermediate similarity or dissimilarity.…Continue
People often ask “What technology & tool skills do I need to develop to be a data scientist?”. We decided to go straight to the source of job descriptions & check what requirements are being asked for while people hire data scientists. We analyzed about 1660 job postings which had “Data Scientists” in the job title and decided to further search for specific technology & tools skills that are required in those job descriptions.
Our first analysis involved understanding what…Continue
Developing machine learning solutions that give a lift from your existing prediction algorithms is not an easy task. They require a multitude of activities to get it right including cleaning up the data, setting up the infrastructure, testing &re-testing the model & finally deploying the algorithm.…Continue
Imagine the following business problem:
A call center has a rule that if more than 8 customers calls in 24 hours about Issue X, then there should be an alarm & that that Issue X should be forwarded to Tier 2 team for further investigation. However, the Tier 2 team believes that 24 hours is too long to wait since the customer experience could suffer. They want to predict BEFORE the 24 hour interval. Therefore, they want the probability at any given time based on historical hourly…Continue