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How can you use Boolean search to filter out irrelevant information for industry research?

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Boolean search is a powerful technique that can help you find relevant and reliable information for industry research and analysis. It allows you to combine keywords and phrases with operators such as AND, OR, NOT, and parentheses to narrow or broaden your search results. In this article, you will learn how to use Boolean search to filter out irrelevant information for industry research.

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Sissel Marie B?rthus

Advisor, Data and Information management

1 What is Boolean search?

Named after George Boole, a 19th-century mathematician who developed a system of logic based on binary values, Boolean search allows you to use three main operators - AND, OR, and NOT - to connect your keywords and phrases. The AND operator requires both terms appear in the document; for example, searching for coffee AND tea will only yield results that mention both beverages. The OR operator allows either term to appear in the document; for example, searching for coffee OR tea will get results that mention either or both beverages. The NOT operator excludes a term from the search; for example, if you search for coffee NOT tea, you will only get results that mention coffee but not tea. Additionally, you can use parentheses to group terms and create more complex queries; for instance, searching for (coffee OR tea) AND (milk OR cream) will get results that mention either coffee or tea with either milk or cream.

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Sissel Marie B?rthus

Advisor, Data and Information management
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Boolean search can be used manually in search engines that allow it by using the operators AND, OR and NOT, or it can be built into search interfaces that allow you to "include all these words", "include either of these words" and "do not include these words". The system will then build the boolean search for you. Some search engines also allow the use of symbols like "&" for AND, "|" for OR and "-" for NOT.

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2 Why use Boolean search for industry research?

Boolean search can help you find more relevant and reliable information for industry research by filtering out irrelevant or noisy results. For example, if you are researching the coffee industry, you might want to exclude results that are about coffee shops, coffee machines, or coffee recipes. You can use the NOT operator to do that. For example, if you search for coffee industry NOT (shop OR machine OR recipe), you will get results that are more focused on the coffee market, production, consumption, or trends.

Boolean search can also help you broaden your search results by including synonyms, variations, or related terms. For example, if you are researching the tea industry, you might want to include results that are about herbal tea, green tea, black tea, or chai. You can use the OR operator to do that. For example, if you search for tea industry OR (herbal OR green OR black OR chai), you will get results that cover different types of tea and their markets.

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3 How to use Boolean search for industry research?

If you want to use Boolean search for industry research, you must first identify your research topic and goal. What are you trying to learn about the industry? What are the key questions or issues you want to address? After that, brainstorm relevant keywords and phrases. Think of synonyms, variations, or related terms that could appear in the documents you're searching for. Then, choose the appropriate operators and parentheses to connect your keywords and phrases. Use AND to narrow your search, OR to broaden it, and NOT to exclude terms. Additionally, use parentheses to group terms and create more complex queries. Finally, test your query and refine it as needed. Check the results and see if they match your expectations. If not, modify your query by adding, removing, or changing terms or operators. Experiment with different combinations until you find what works best for your research.

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Sissel Marie B?rthus

Advisor, Data and Information management
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Be sure to understand the logic of your query. It's easy to get lost in complex queries. Eg., the article suggests "tea industry OR (herbal OR green OR black OR chai)". This search will give results for ""tea industry" OR herbal OR green etc" meaning you could get results with the word "green" that has nothing to do with tea. You could even get results for "tea OR industry OR herbal etc..", meaning the results would be pretty meaningless. A better query could be ""tea industry" AND (herbal OR green OR black OR chai)". Be aware that this would exclude results that doesn't specify the tea type. Always analyse your query to understand what results you should expect, what results you could expect not to see, and whether this meets your needs.

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4 Boolean search tips and tricks

Making your Boolean search more effective and efficient is possible with a few tips and tricks. For example, using quotation marks to search for exact phrases, such as "coffee industry", allows you to get results that have the exact phrase, not coffee and industry separately or in a different order. Additionally, asterisks can be used to search for wildcard terms; searching for coffe* will bring up any words that start with coffe, such as coffee, coffees, coffeehouse, or coffee-maker. Advanced search features can also refine your search by date, source, language, or other criteria. Most search engines and databases offer options to filter your results. To cross-check and verify information, multiple sources can be used. Boolean search can be used to compare different sources and find the most reliable and relevant information for your research.

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Sissel Marie B?rthus

Advisor, Data and Information management
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Search engines typically build boolean operators into their searches. If you type more than one word into a search, the engine will often combine them with an AND or OR operator, or a mix of both. If you get more results when expanding your search with more words, the OR operator is used. If you get fewer, the AND operator is used. By using the operator manually you can get results more tailored to your needs, by forcing the engine to use either AND to narrow down the search, or OR to expand it.

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5 Boolean search examples

Using Boolean search for industry research can be beneficial in a variety of ways. For example, if you are researching the impact of COVID-19 on the travel industry, you can search for travel industry AND COVID-19, and add other terms related to the impact, such as revenue, demand, recovery, or trends. If you are researching the opportunities and challenges of renewable energy industry, you can search for renewable energy industry AND (opportunities OR challenges) and add other terms specific to the opportunities or challenges, such as technology, policy, market, or environment. Additionally, if you are researching the competitive landscape of the smartphone industry, you can search for smartphone industry AND (competitors OR market share OR analysis) and add the names of major competitors like Apple, Samsung, Huawei, or Xiaomi.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How can you use Boolean search to filter out irrelevant information for industry research?

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1 What is Boolean search?

2 Why use Boolean search for industry research?

3 How to use Boolean search for industry research?

4 Boolean search tips and tricks

5 Boolean search examples

6 Here’s what else to consider

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How can you use Boolean search to filter out irrelevant information for industry research?

1

2

3

4

5

6

1 What is Boolean search?

2 Why use Boolean search for industry research?

3 How to use Boolean search for industry research?

4 Boolean search tips and tricks

5 Boolean search examples

6 Here’s what else to consider

Search Engines

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