General Awareness

What is data bias, and how do you deal with it in collected data?

For the majority of firms, data bias is a vital operation. Businesses rely on data to make wise decisions. Information collection techniques have been created to greatly automate the process due to the significance of data. These techniques, however, heavily rely on machine learning (ML), which could result in inaccurate results.

We’ll look at various data collection techniques in this post, along with how biases can affect the outcomes of these efforts. We’ll also examine biases and how they affect ML-based products like the Google Reverse Image Search API and others, as well as their origins.

Data Gathering Techniques

There are a few strategies that are frequently employed when it comes to gathering enormous volumes of information from the internet. By automating a large portion of the collection process, these techniques increase efficiency. Let’s examine the top three automated data collection techniques.

Web Scraping

Data collection from websites, search engines, and even photos is known as web scraping. When using a web scraper, you must enter the specifications for the data you need and the domains from which it should be gathered. After being approved, the programme then crawls each of these websites and gathers pertinent information. After finished, the data is put into a single format so that it may be assessed.

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Tracking is an automatic procedure for monitoring the websites and platforms that your website visitors visit. Companies acquire a more thorough understanding of user preferences, surfing patterns, and other factors. Cookies, web beacons, and other technologies can all be used for tracking. A user must first visit and accept your cookies on your website before you can begin tracking them.

API (Application Programming Interface)

Although APIs aren’t exactly tools for data collection, they do make the process easier by making information easier to discover. An API can be used by a company or platform to make data it has collected easily accessible to other users who might find the data useful. Governments and companies that support open data systems commonly use APIs. The best approach is thought to be data collection using APIs because it complies with all relevant privacy and data protection laws.

Data Biases Affecting Information

Regrettably, we rely on several ML models to accomplish the jobs when we automate procedures. The same is true when we utilise tracking, web scraping, or even APIs to get data. This has the drawback of perhaps introducing data biases.

What Are Data Biases?

When specific pieces of information that potentially introduce bias are present in the content used to train the ML model, data bias develops. For instance, the Google Reverse Image Search API’s model may be biased towards only returning photographs of fair-skinned people if it was trained using only images of fair-skinned people. The findings may also be biased towards a particular gender if the data used to train your web scraper was based primarily on that gender.

This poses a serious problem for data collection because it raises the possibility that your data may be unreliable or lacking. Without even realising it, you could be excluding a whole market segment if the programme you employ has bias.

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Types of Data Bias

Let’s look at a few different types of data bias to better understand how biases can happen.

Response or Activity Bias

They are produced by people and are frequently opinions. They can consist of Facebook postings, tweets on Twitter, Amazon reviews, and other comparable information. This has the drawback that few individuals submit ratings or comments. This indicates that just a small part of the population is represented in the views gathered.

Omitted Variable Bias

When important components that affect ML results are missing from models, bias results. This frequently occurs in systems where data is entered by humans. Humans are naturally prejudiced, thus they may unintentionally only take into account a small number of factors that they believe to be significant while excluding other factors.

Societal Bias

This is the most prevalent form of bias that can occur during data collecting; it is also known as label bias. This happens in human-produced information and can be found in blog posts, news articles, or social media posts. Frequently, this material contains prejudices based on stereotypes of race or gender.

How to Overcome Data Bias?

It won’t be easy to overcome data bias as a lot of the content on the internet is inherently biased because the content is created by humans. There is sure to be biased in the information because, until the previous ten years, white men composed the majority of the content creators. As ML models rely on data to inform their programmes, if the data you use is biased, it’s likely that the programme will be prejudiced as well.

As a result, it’s crucial that when ML models are constructed, they evaluate the learning data to make sure that it’s objective. Also, they must make sure to include material that represents all genders, ages, races, and abilities.

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You should be aware of potential biases when gathering data. You should be critical and omit anything that is too prejudiced while assessing your data. Also, you should make an effort to get as much data as you can, frequently by including these requirements in your information requests.

Final Thoughts

Although gathering data is a crucial step for organisations, the information may be biased. Data bias can also be affected by the methods used to gather the data, such as the data targets. In order to remove prejudice from your final results, it’s critical to be aware of these biases and assess any information collected correctly.

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