Data Science & Machine Learning

First thing if you are a beginner and have decided you want to learn Data Science then know that it is a journey (6 months - 1 year at least) and not a 1 month thing where u do some courses and you are a data scientist. There are different fields in Data Science that you have to first get familiar and strong in basics as well as do hands-on to get the abilities that are required to function in a full time job opportunity. Then further delve into advanced implementations. There are plenty of roadmaps and online content both paid and free that you can follow. In a nutshell. A few essential things that will be necessary and in no particular order that will at least get your data science journey started are below: Basic Statistics, Linear Algebra, calculus, probability Programming language (R or Python) - Preferably Python if you rather want to later on move into a developer role instead of sticking to data science. Machine Learning - All of the above will be used here to implement machine learning concepts. Data Visualisation - again it could be simple excel or via r/python libraries or tools like Tableau,PowerBI etc. This can be overwhelming but again its just an indication of what lies ahead. So most important thing is to just START instead of just contemplating the best way to go about this. Since lot of things can be learnt independently as well in no particular order. You can use the below Sources to prepare your own roadmap: @free4unow_backup - some free courses from here @datasciencefun - check & search in this channel with #freecourses Python - https://bit.ly/45q7pxh Kaggle - https://www.kaggle.com/learn

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Top Platforms for Building Data Science Portfolio Build an irresistible portfolio that hooks recruiters with these free platforms. Landing a job as a data scientist begins with building your portfolio with a comprehensive list of all your projects. To help you get started with building your portfolio, here is the list of top data science platforms. Remember the stronger your portfolio, the better chances you have of landing your dream job. 1. GitHub 2. Kaggle 3. LinkedIn 4. Medium 5. MachineHack 6. DagsHub 7. HuggingFace

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New developers: whenever you work on something interesting, write it down in a document which you keep updating. This will be very helpful when you need to create a resume or have to talk about your achievements in an interview. (Or for college essays.) I can guarantee you that if you don't do this, you will forget half the interesting things you've done; and for a majority of us, our brains are experts in convincing us that we haven't really done anything interesting.

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Additional Resources To Assist Research https://www.reddit.com/r/MachineLearning/ • https://www.reddit.com/r/deeplearning/ • https://paperswithcode.com/ • https://papers.nips.cc/ • https://icml.cc/ • https://iclr.cc/ • https://www.researchgate.net/

©How fresher can get a job as a data scientist?© ans:-India as a job market is highly resistant to hire data scientist as a fresher. Everyone out there asks for at least 2 years of experience, but then the question is where will we get the two years experience from? The important thing here to build a portfolio. As you are a fresher I would assume you had learnt data science through online courses. They only teach you the basics, the analytical skills required to clean the data and apply machine learning algorithms to them comes only from practice. Do some real-world data science projects, participate in Kaggle competition. kaggle provides data sets for practice as well. Whatever projects you do, create a GitHub repository for it. Place all your projects there so when a recruiter is looking at your profile they know you have hands-on practice and do know the basics. This will take you a long way. All the major data science jobs for freshers will only be available through off-campus interviews. Some companies that hires data scientists are: Siemens Accenture IBM Cerner Creating a technical portfolio will showcase the knowledge you have already gained and that is essential while you got out there as a fresher and try to find a data scientist job.

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Free Datasets to practice data science projects 1. Enron Email Dataset Data Link: https://www.cs.cmu.edu/~enron/ 2. Chatbot Intents Dataset Data Link: https://github.com/katanaml/katana-assistant/blob/master/mlbackend/intents.json 3. Flickr 30k Dataset Data Link: https://www.kaggle.com/hsankesara/flickr-image-dataset 4. Parkinson Dataset Data Link: https://archive.ics.uci.edu/ml/datasets/parkinsons 5. Iris Dataset Data Link: https://archive.ics.uci.edu/ml/datasets/Iris 6. ImageNet dataset Data Link: http://www.image-net.org/ 7. Mall Customers Dataset Data Link: https://www.kaggle.com/shwetabh123/mall-customers 8. Google Trends Data Portal Data Link: https://trends.google.com/trends/ 9. The Boston Housing Dataset Data Link: https://www.cs.toronto.edu/~delve/data/boston/bostonDetail.html 10. Uber Pickups Dataset Data Link: https://www.kaggle.com/fivethirtyeight/uber-pickups-in-new-york-city 11. Recommender Systems Dataset Data Link: https://cseweb.ucsd.edu/~jmcauley/datasets.html Source Code: https://bit.ly/37iBDEp 12. UCI Spambase Dataset Data Link: https://archive.ics.uci.edu/ml/datasets/Spambase 13. GTSRB (German traffic sign recognition benchmark) Dataset Data Link: http://benchmark.ini.rub.de/?section=gtsrb&subsection=dataset Source Code: https://bit.ly/39taSyH 14. Cityscapes Dataset Data Link: https://www.cityscapes-dataset.com/ 15. Kinetics Dataset Data Link: https://deepmind.com/research/open-source/kinetics 16. IMDB-Wiki dataset Data Link: https://data.vision.ee.ethz.ch/cvl/rrothe/imdb-wiki/ 17. Color Detection Dataset Data Link: https://github.com/codebrainz/color-names/blob/master/output/colors.csv 18. Urban Sound 8K dataset Data Link: https://urbansounddataset.weebly.com/urbansound8k.html 19. Librispeech Dataset Data Link: http://www.openslr.org/12 20. Breast Histopathology Images Dataset Data Link: https://www.kaggle.com/paultimothymooney/breast-histopathology-images 21. Youtube 8M Dataset Data Link: https://research.google.com/youtube8m/

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1. What is RDBMS? How is it different from DBMS? RDBMS stands for Relational Database Management System that stores data in the form of a collection of tables, and relations can be defined between the common fields of these tables. 2.What is ETL in SQL? ETL stands for Extract, Transform and Load. It is a three-step process, where we would have to start off by extracting the data from sources. Once we collate the data from different sources, what we have is raw data. This raw data has to be transformed into the tidy format, which will come in the second phase.Finally, we would have to load this tidy data into tools which would help us to find insights. 3. What is a kernel function in SVM? In the SVM algorithm, a kernel function is a special mathematical function. In simple terms, a kernel function takes data as input and converts it into a required form. This transformation of the data is based on something called a kernel trick, which is what gives the kernel function its name. Using the kernel function, we can transform the data that is not linearly separable (cannot be separated using a straight line) into one that is linearly separable. 4. What do you understand by the F1 score? The F1 score represents the measurement of a model's performance. It is referred to as a weighted average of the precision and recall of a model. The results tending to 1 are considered as the best, and those tending to 0 are the worst. It could be used in classification tests, where true negatives don't matter much.

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