There are plenty of free sources to find free datasets for machine learning.
Here is the list of some of the most popular ones.
For each dataset, it is necessary to determine its quality. Several characteristics describe high-quality data, but it is essential to point out accuracy, reliability, and completeness. Every high-quality data should be precise and error-free. Otherwise, your data is misleading and inefficient. If your data is not complete, it is harder to use because of the lack of information. What if your data is ambiguous or vague? You cannot trust your data; it's unreliable.
Data quality answers the question, “How is my data?” If your data helps you with business operations and decisions, you can say that your data is of good quality.
Free datasets for machine learning
By googling stuff like free datasets for machine learning, time-series dataset, classification dataset, etc., you see many links to different sources. But which of them include high-quality data? We will list a few sources, but it is essential to know that among them, there are also data that have their drawbacks. Therefore, you have to be familiar with the characteristics of a good dataset.
Kaggle is a big data-science competition platform for predictive modeling and analytics. There are plenty of datasets you can use to learn artificial intelligence and machine learning. Most of the data is accurate and referenced, so you can test or improve your skills or even work on projects that could help people.
Each dataset has its usability score and description. Within the dataset, there are various tabs such as Tasks, Code, Discussions, etc. Most datasets are related to different projects, so you can find other trained and tested models on the same datasets. On Kaggle, you can find a big community of data analysts, data scientists, and machine learning engineers who can evaluate your work and give you valuable tips for further development.
UCI Machine Learning Repository
The UCI Machine Learning Repository is a database of high-quality and real-world datasets for machine learning algorithms. Datasets are well known in terms of exciting properties and expected good results; they can be an example of valuable baselines for comparisons. On the other hand, the datasets are small and already pre-processed.
GitHub is one of the world’s largest communities of developers. The primary purpose of GitHub is to be a code repository service. In most cases within a project, we can find its application on some datasets; you will need to spend a little more time to find the wanted dataset, but it will be worth it.
data.world is a large data community where people discover data and share analysis. Inside almost every project, there are some available datasets. When searching, you must be very precise to get the desired results.
Once you have found your dataset, it’s Graphite time; run several models and create various reports using visualizations and tables. With Graphite, it's easier to make business decisions. Maybe you are just a few clicks away from the turning point of your career. 🙂
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