What is Pattern Matching in Artificial Intelligence?

What is Pattern Matching in Artificial Intelligence?: Pattern matching is a technique through which you are able to test whether an expression has the required characteristics. In simpler terms, pattern matching is the process of looking for a specific type of data within an expression. One of the most commonly used patterns in AI is the instance pattern, where a pattern is defined on the basis of an individual occurrence rather than a particular number of occurrences. Another example is the regular expression pattern, which is defined by a sequence of characters in a particular order.

Examples of Traditional Pattern Matching techniques include:-

  • A boolean expression like If (expression) then result else if Expression1 else Expression2- String pattern matching. For example, searching for a pattern of “ABC” anywhere in the string.- Regular expressions. for example, a regex of ABC____FGH would be equivalent to “ABCABCD” since multiple occurrences of the pattern “ABC” is matched by the regex “ABC____FGH”.

Examples of advanced pattern matching include:- 

  • Data-driven decision trees and machine-learning classifiers: You can use data-driven decision trees and machine-learning classifiers to identify patterns in order to recognize certain data patterns and categorize them accordingly. Machine learning classifiers can be used to assign labels to images by recognizing patterns in the images. Once you have identified these patterns, you can identify the appropriate label based on the pattern that you have identified.

What is Pattern Matching in AI?

Pattern matching is a technique used in AI which allows a computer program to identify a specific pattern that is present in a given data set and take appropriate actions based on the results of the analysis. Pattern matching can be used to sort and identify specific patterns of data within a dataset based on specific criteria that have been predefined. Some of the most common uses of pattern matching are searching through a database of information for a specific piece of information or object as well as performing data analysis and processing using a set of predetermined rules.

What is Pattern Matching in programming?

Programming languages use a number of methods and tools to find different patterns in programs during a syntax check. One of the most common methods for finding patterns in programs is using regular expressions. A regular expression is a special type of language that is used to define a pattern to look for in a program. It is used for a wide variety of purposes including:- Performing searches for a specific word or set of words within the text of a code file- Finding the correct format to use when inserting values into a database- Extracting data from an input form or a file- Recognizing specific relationships between variables in an object file.

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What is Pattern Matching in SQL?

Every query in SQL contains at least one part that looks like a selection condition between keywords and values that are used to filter data. The most commonly used pattern-matching operations in SQL are inclusion and exclusion conditions which are used to filter the rows in the table/view. Inclusion conditions are used when you are searching for a value in a specific column of the database table and its value must match the value in your selection condition. Exclusion conditions are used when you want a value of the column of your table/view to be different from your selection condition value. A pattern matching example can be, if you want to exclude all values from a column that have ‘@’ as a value from the selection condition, you will use an exclusion condition like WHERE column_name NOT LIKE ‘% @%’ .

Pattern Matching in SQL

What is Pattern Matching in Qualitative Research?

Qualitative research is often an exploratory process that requires researchers to gather information from varied sources in order to compile a list of potential patterns and themes that describe the phenomenon being studied. This process is called pattern-matching and it is an important component of the qualitative research process because it allows researchers to identify key similarities and differences across a wide range of sources and documents. There are a number of different methods that can be used for pattern-matching including clustering analysis, content analysis, ethnographic research, grounded theory, and thematic analysis. All of these methods involve comparing two or more sets of information or documents and identifying similarities or differences based on certain criteria or themes that are consistently present within each set. Once the similarities and differences have been identified, researchers can then use this information to create a narrative or description of the phenomenon being studied.

Which operator performs Pattern Matching?

A function determines which elements of a list match some patterns or strings. It can be of two types: matching function and non-matching function. It is an object with an argument type of pattern and input type of list. If the argument is matched, then it is considered non-matching; otherwise, it is matching. Pattern matching uses the operator == or the conditional operator <=> (less than) to check for matching patterns between the elements of the two lists and returns True if the pattern is matched or False if not. You do this by checking each value in your list of inputs and seeing if it’s the same as the corresponding value in the pattern (same value type, same data type, etc). If it does, then you have found a match. If it doesn’t, you haven’t found a match. In Python, you can check for the presence of a string in a list by using the in operator: >>> x = [1,2,3] >>> “cat” in x True returns True (x contains “cat”) returns False (“cat” is not present in x) So if you think your cat is as smart as a human, you can program it to do math calculations by comparing it to human intelligence using the function in operator!

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Wrapping it up!!

Hence, it can be concluded from the post that pattern matching allows a system to determine whether there is a match between a given input pattern and the target pattern. This process is used in many different applications including search engines, security systems, etc. It can be seen that pattern matching plays an important role in many of the applications that we use today. Patterns also play an important role in various areas of research and it is believed that pattern recognition techniques could be used to solve many difficult problems in science and engineering in the future. Hopefully, the post was helpful for you.


At its most basic level, machine learning relies on something called an algorithmic method. The term algorithm is used frequently in computer science to describe any series of steps or processes that a computer must follow to complete a task. In the case of machine learning, the algorithmic method involves applying a set of specific steps to the data you are attempting to train the computer to recognize a pattern within. These steps can then be repeated and modified until the computer is able to accurately classify data using patterns and trends within that data.


Pattern recognition is using algorithms to find patterns in datasets. Machine Learning is a set of tools that allow one to train systems/algorithms to be able to recognize patterns in datasets that they have never seen before themselves. Machine learning is an area of active research & development so expect it to advance significantly in the coming decade.

Data is analyzed to draw accurate conclusions about possible outcomes. Human beings analyze complex situations and draw accurate conclusions every day without needing to use an algorithm to do so. Neural networks are just another set of tools used by humans to facilitate their learning processes.

Data Mining involves extracting patterns from large amounts of data which is pre-processed in order to minimize dependencies on features such as target values or labels. Machine Learning makes use of algorithms to construct models from data that are then used to make predictions. Pattern Recognition uses algorithms to extract patterns from data that can then be used to make predictions about future events.

Asmita Kar

I am a Senior Content Writer working with Pickl.AI. I am a passionate writer, an ardent learner and a dedicated individual. With around 3years of experience in writing, I have developed the knack of using words with a creative flow. Writing motivates me to conduct research and inspires me to intertwine words that are able to lure my audience in reading my work. My biggest motivation in life is my mother who constantly pushes me to do better in life. Apart from writing, Indian Mythology is my area of passion about which I am constantly on the path of learning more.