In today’s scenario, anything is deemed incomplete without proper data to support it. Web data extraction isn’t just about comparative advantage now. Users are often faced with the choice of data extraction technique they want to use: manual or automated web data extraction techniques. This choice might differ from user to user, but one cannot help but emphasize the importance of each method before choosing.
In this article, we will explore and understand the differences between manual and automated web data extraction techniques.
What is web data extraction?
Web data extraction refers to the process of extracting data from websites and organizing that data into an understandable format. This data is then organized and stored in spreadsheets and databases for further analysis and use.
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The Data Extraction blog will give you a quick review of benefits and challenges of Data extraction. If you need to know about various data extraction tools you can give the Top 5 data extraction techniques blog a thorough read.
The next segment of the blog will brief you about the available methods of data extraction and a few examples to help ensure clarity on each method.
Methods of web data extraction
There are three main methods that you can use while extracting data from various websites.
1. Manual web data extraction
- Manual extraction involves extracting data from various sources and storing it in databases or spreadsheets.
- This involves manually copying and pasting chunks of data from websites and storing them for further use.
- To ensure efficient extraction, you can keep track of websites and URLs you extract your data from. This helps maintain transparency, consistency and use them for future referencing.
- You can also seek help from browser extensions, plugins or tools like web scrapers, copy-paste helpers and data extractors, to ensure efficient manual web extraction.
2. Automated web data extraction
- Automated extraction refers to the process of extracting and storing large chunks of data from websites in spreadsheets and databases.
- Unlike manual method of extracting data, tools like Extract-Transform Load (ETL) are used to extract data and store it in an understandable format.
- Web scraping tools like Beautiful Soup, Scrapy, etc., offers a variety of features that help dealing with complex data.
- You can use API scraping tools like Newsdata.io, ParseHub and Octoparse, to access data from various websites using APIs.
- Another alternative is using web scrapers like Python and Import.io, to extract highly accurate and up-to-date data from a given website.
3. Hybrid web data extraction
- Hybrid extraction refers to combining both manual and automated extraction techniques. It combines efficiency and precision, overcoming any obstacles faced in manual and automated data extraction.
- You can apply machine learning models like Decision trees and Naive Bayes, to ensure only relevant and useful data is extracted and any irrelevant data is left out.
- The extracted data can then be reviewed manually to ensure there is no missing information or errors in the data.
Factors of Differentiation
Among the several factors that make manual and automated data extraction techniques different from each other, given below are a few main points of difference.
1. Time & labour
Time and labour levied in using a particular data extraction technique play a crucial role, as it helps decide how much time and labour you need to invest to get the desired results. The time and labour investment vary for both techniques, as do the results obtained.
2. Cost-Effectiveness
The next factor of difference is cost-effectiveness, i.e., how much cost you will have to incur to extract data from websites into understandable formats. This cost might vary depending on the requirements of each data extraction technique.
3. Proneness
The next factor in line is Proneness, i.e. proneness of the data extraction technique to difficulties of human errors, complex website structures, etc. A certain method can be prone to several difficulties that might hinder an efficient and effective web extraction of data.
4. Scalability
Scalability Scalability refers to handling increased traffic without letting it hamper the performance and reliability. It varies for both methods of data extraction as per the size of the data that is to be extracted from the websites.
5. Investment
The investment required for carrying out an extraction technique differs based on the resources and technology used in the given method of data extraction. While the investment might be in the manpower for one of the extraction techniques, it might not be the case for the other.
6. Consistency & Contextual Understanding
The contextual understanding refers to the ability to comprehend and interpret information under any given circumstance. On the other hand, consistency refers to the ability to maintain the same pattern of data extraction and interpretation throughout the process.
Manual VS Automated Web Data Extraction Techniques
Points of Differences | Manual Web Data Extraction Techniques | Automated Web Data Extraction Techniques |
|---|---|---|
| Time & Labour | These techniques are done manually, thus proving to be time-consuming and labour-intensive. | These techniques rely on ETL tools, making them comparatively faster and less labour-intensive. |
| Cost-Effectiveness | The employing of lots of labour makes these techniques a lot more than costly. | These techniques have proven to be comparatively cost-effective. |
| Proneness | These techniques are carried out manually and are more prone to human errors like typos and oversight. | This method uses techniques like web scraping and is prone to difficulty with complex or dynamic website structures. |
| Scalability | These techniques provide limited scalability, especially when dealing with large datasets. | These techniques are comparatively more scaled and can handle large chunks of data without much difficulty. |
| Investment | The user needs to invest in terms of labour in this method of web data extraction. | The user needs to invest in technology and expertise in this method of web data extraction. |
| Consistency & Contextual Understanding | Manual web data extraction techniques lack consistency but provide contextual understanding. | Automated web data extraction techniques lack contextual understanding but make up for it by ensuring consistency. |
Drawing Conclusion
After a thorough study of manual as well as automated web data extraction techniques, we couldn’t help but notice the presence of certain points where one of the data extraction techniques complemented the other.
In a way, instead of looking at them as substitutes, you should perceive them complementary to each other. Thus, the third and best alternative for extracting techniques is hybrid web data extraction. In this method of data extraction, you combine the pros of both manual and automated data extraction techniques to extract large amounts of data while still having some sort of control over the quality.
Frequently Asked Questions
Q1. What is manual web data extraction?
Manual web extraction involves extracting data from various sources and storing it in databases or spreadsheets. This involves manually copying and pasting chunks of data from websites and storing them for further use.
Q2. What is automated web data extraction?
Automated web extraction refers to the process of extracting and storing large data from websites in spreadsheets and databases. Unlike manual extraction, tools like Extract-Transform Load (ETL) to extract data and store it in an understandable format.
Q3. Can you use manual web data extraction for complex extraction tasks of data?
For complex extraction tasks of data, it is recommended to use automated data extraction techniques. This is so because the ETL (Extract-Transform Load) tools making it faster and convenient to extract data from websites.
Q4. Which method is more cost-effective: manual or automated web data extraction techniques?
Automated web data extraction techniques are more cost-effective as compared to manual extraction techniques. This is so because they are effective and help avoid the cost of employing labour as is done for manual extraction.
Q5. Which method is the best for web data extraction?
While both methods have their advantages, several disadvantages might make you contemplate your decision. In such cases, hybrid web data extraction techniques take the lead and balance out the disadvantages of both methods.
Raghav is a talented content writer with a passion to create informative and interesting articles. With a degree in English Literature, Raghav possesses an inquisitive mind and a thirst for learning. Raghav is a fact enthusiast who loves to unearth fascinating facts from a wide range of subjects. He firmly believes that learning is a lifelong journey and he is constantly seeking opportunities to increase his knowledge and discover new facts. So make sure to check out Raghav’s work for a wonderful reading.
