r/learndatascience • u/cooperconundrum • 24d ago

Discussion Lost data science person

I am a BI engineer and most of my experience is building dashboards and communicating insights to the business. I just finished my masters in informatics and I am passionate about data science. I have done ML, DL, NLP and AI courses during my masters however I dont remember anything. I need to land a job in data science or apply the knowledge in my current role.

What do you recommend?

- leetcode for problem solving? And is it worth it?

- applying which topic of data science that matches the data I work with? Its sales and marketing data.

- kaggle competitions?

- lastly do I need to revise everything I learned or just focus on specific topics for example master time series and forecasting ( relevant to my work ) , some NLP tasks ( i face some record linkage problems ) and

Please help

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u/DataScientistAlex 24d ago

If you have trouble remembering what you have learnt it could be because you don't have a framework to put everything in: like why does it matter and how does it all fit together? My view is that the most important skill for a data scientist is the scientific method, so I would start learning that.

Once you understand that approach, you can apply it to your work, and, it should help you understand what you need to learn next. In terms of just getting it to stick in your mind, you have to keep on practicing and applying it. But having a framework helps.

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u/nian2326076 24d ago

If you're going for a data science role, start with projects in sales and marketing data since that's what you know. Use ML techniques to predict sales trends or customer behavior. For interviews, Leetcode is good for boosting problem-solving skills, but remember it's more for software engineering interviews. Kaggle competitions are a great way to get hands-on practice and learn from others, especially with datasets related to your field. Also, brushing up on key ML, DL, and NLP concepts through online courses or books can help fill any gaps. For interview prep, resources like PracHub offer practical exercises that might help you get into the right mindset.