How We Maintain Data Quality While Handling Large Scale Extraction

How We Maintain Data Quality While Handling Large Scale Extraction

The demand for high quality data is increasing along with the rise in products and services that require data to run. Although the information available on the web is increasing in terms of quantity and quality, extracting it in a clean, usable format remains challenging to most businesses. Having been in the web data extraction business for long enough, we have come to identify the best practices and tactics that would ensure high quality data from the web.

At PromptCloud, we not only make sure data is accessible to everyone, we make sure it’s of high quality, clean and delivered in a structured format. Here is how we maintain the quality while handling zettabytes of data for hundreds of clients from across the world.

Manual QA process

1. Crawler review

Every web data extraction project starts with the crawler setup. Here, the quality of the crawler code and its stability is of high priority as this will have a direct impact on the data quality. The crawlers are programmed by our tech team members who have high technical acumen and experience. Once the crawler is made, two peers review the code to make sure that the optimal approach is used for extraction and to ensure there are no inherent issues with the code. Once this is done, the crawler is deployed on our dedicated servers.

2. Data review

The initial set of data starts coming in when the crawler is run for the first time. This data is manually inspected, first by the tech team and then by one of our business representatives before the setup is finalized. This manual layer of quality check is thorough and weeds out any possible issues with the crawler or the interaction between the crawler and website. If issues are found, the crawler is tweaked to eliminate them completely before the setup is marked complete.

Automated monitoring

Websites get updated over time, quite frequently than you’d imagine. Some of these changes could break the crawler or cause it to start extracting the wrong data. This is why we have developed a fully automated monitoring system to watch over all the crawling jobs happening on our servers. This monitoring system continuously checks the incoming data for inconsistencies and errors. There are three types of issues it can look for:

1. Data validation errors

Every data point has a defined value type. For example, the data point ‘Price’ will always have a numerical value and not text. In cases of website changes, there can be class name mismatches that might cause the crawler to extract wrong data for a certain field. The monitoring system will check if all the data points are in line with their respective value types. If an inconsistency is found, the system immediately sends out a notification to the team members handling that project and the issue is fixed promptly.

2. Volume based inconsistencies

There can be cases where the volume count for records significantly drop or increase in an irregular fashion. This is a red sign as far as web crawling goes. The monitoring system will already have the expected record count for different projects. If inconsistencies are spotted in the data volumes, the system sends out a prompt notification.

3. Site changes

Structural changes happening to the target websites is the main reason why crawlers break. This is monitored by our dedicated monitoring system, quite aggressively. The tool performs frequent checks on the target site to make sure nothing has changed since the previous crawl. If changes are found, it sends out notifications for the same.
High end servers

It is understood that web crawling is a resource-intensive process that needs high performance servers. The quality of servers will determine how smooth the crawling happens and this in turn has an impact on the quality of data. Having firsthand experience in this, we use high-end servers to deploy and run our crawlers. This helps us avoid instances where crawlers fail due to the heavy load on servers.

Data cleansing

The initially crawled data might have unnecessary elements like HTML tags. In that sense, this data can be called crude. Our cleansing system does an exceptionally good job at eliminating these elements and cleaning up the data thoroughly. The output is clean data without any of the unwanted elements.

Structuring

Structuring is what makes the data compatible with databases and analytics systems by giving it a proper, machine readable syntax. This is the final process before delivering the data to the clients. With structuring done, the data is ready to be consumed either by importing it to a database or plugging to an analytics system. We deliver the data in multiple formats – XML, JSON and CSV which also adds to the convenience of handling it.

Source:https://www.promptcloud.com/blog/how-we-maintain-data-quality-web-data-extraction

How Data Scraping Help Businesses?

Gathering data from diverse internet sources like website and others, the process is called as data scraping. Around the globe such and many describe data scraping as web scraping, data harvesting. Now days the competition is very high in every business and for that the companies required to collect more useful data for their business. 

Research market trends and extracting different types of data is necessary today’s. Data scraping is one of the latest technology that collect diverse data from internet source and make use in the analysis.

By using data scraping any one can quickly classify the any kind of information and also make decision and marketing strategies. Reducing risk and also improving business profit are other advantages of data scraping. Scraping data from website by manually and also using data scraper, website scraper and website data scraper tools.

Now you want to get data scraping solutions for your business?The company offers lowest industry rate data scraping, web data scraping and website data scraping services as the need of clients with never compromise on quality and fast turn around time. For further details about the company send query at info@www.web-scraping-services.com.


Source Url : -http://3idatascraping.weebly.com/blog/how-data-scraping-help-businesses

Web Scraping – A trending technique in data science!!!

Web Scraping – A trending technique in data science!!!

Web scraping as a market segment is trending to be an emerging technique in data science to become an integral part of many businesses – sometimes whole companies are formed based on web scraping. Web scraping and extraction of relevant data gives businesses an insight into market trends, competition, potential customers, business performance etc.  Now question is that “what is actually web scraping and where is it used???” Let us explore web scraping, web data extraction, web mining/data mining or screen scraping in details.

What is Web Scraping?

Web Data Scraping is a great technique of extracting unstructured data from the websites and transforming that data into structured data that can be stored and analyzed in a database. Web Scraping is also known as web data extraction, web data scraping, web harvesting or screen scraping.

What you can see on the web that can be extracted. Extracting targeted information from websites assists you to take effective decisions in your business.

Web scraping is a form of data mining. The overall goal of the web scraping process is to extract information from a websites and transform it into an understandable structure like spreadsheets, database or csv. Data like item pricing, stock pricing, different reports, market pricing, product details, business leads can be gathered via web scraping efforts.

There are countless uses and potential scenarios, either business oriented or non-profit. Public institutions, companies and organizations, entrepreneurs, professionals etc. generate an enormous amount of information/data every day.

Uses of Web Scraping:

The following are some of the uses of web scraping:

- Collect data from real estate listing
- Collecting retailer sites data on daily basis
- Extracting offers and discounts from a website.
- Scraping job posting.
- Price monitoring with competitors.
- Gathering leads from online business directories – directory scraping
- Keywords research
- Gathering targeted emails for email marketing – email scraping
- And many more.

There are various techniques used for data gathering as listed below:

- Human copy-and-paste – takes lot of time to finish when data is huge
- Programming the Custom Web Scraper as per the needs.
- Using Web Scraping Softwares available in market.

Are you in search of web data scraping expert or specialist. Then you are at right place. We are the team of web scraping experts who could easily extract data from website and further structure the unstructured useful data to uncover patterns, and help businesses for decision making that helps in increasing sales, cover a wide customer base and ultimately it leads to business towards growth and success.

Source:http://webdata-scraping.com/web-scraping-trending-technique-in-data-science/

Tips For Data Scrapping in PDF File

Tips For Data Scrapping in PDF File

What is the Data Scrapping?

End data, a method or a procedure in which material is extracted from the text refers to a document. A person using this process can remove material from a PDF file format.

Those involved in commercial activities may fall short on data disposal. It is a process in which data or information can be extracted from the Portable Document Format file. They have tools that automatically format data that different provisions may be found on the Internet are easy to use. These advanced tools to the needs of users can gather information. Users do just words or phrases and all related equipment, Portable Document Format file that will extract the necessary information available to enter. It is widely used to collect information from an editable format.

Portable Document Format files are a major asset to protect the originality of the documents you convert from Word to PDF data. Algorithms the image file compression file sizes are due to heavy graphics or content are less. A portable Data Scrapping document format or to fix any software, hardware independent. File encryption enhances the security of its content allows.

How data from a PDF file, you can scrap?

A portable document format that an application for exchange or transfer data over the content or the platform can be used. Part of storing large amounts of data as a simple tool can use this program. Easy and rapid application materials in a portable document format can handle. The computer program that more or stored in a Portable Document Format file is a variety of data extracted.

Valuable content in a particular file can remove a non-editable. An application containing a PDF document can make large amounts of valuable information. This technique of sampling equipment reports, theses, presentations, projects, manuals and other documents those are useful to prepare.

Information out to eliminate important data in the format support. Easily extracted from a person can keep the formatting of the data intact and secure. You and PDF documents on a variety of subjects to make a number of Word may be for information purposes. A scene from a non-editable file can delete content or images. Therefore, with text and graphics can be extracted.

A Portable Document Format is an application that is used for a variety of reasons. A personal password, certificates and digital signatures can encrypt files using. It is portable and compatible format that allows you to transfer your files in Portable Document Format is applied. The request to use the information for a variety of reports can be prepared properly.

Source:http://www.sooperarticles.com/business-articles/outsourcing-articles/tips-data-scrapping-pdf-file-492673.html#ixzz4hmydaqhY

Web Data and Web Scraping

Web Data and Web Scraping

You can get web data through a process called web scraping. Since websites are created in a human readable format, software can’t meaningfully analyze this information. While you could manually (read: the time-consuming route) input this data into a format more palatable to programs, web scraping automates this process and eliminates the possibility of human error.

How You Can Use Web Data

If you’re new to the world of web data or looking for creative ways to channel this resource, here are three real world examples of entrepreneurs who use scraped data to accelerate their startups.

Web Data for Price Monitoring

The key to staying ahead of your competitors online is to have excellent online visibility, which is why we invest so much in paid advertising (Google Adwords). But it occurred to me that if you aren’t offering competitive prices, then you’re essentially throwing money down the drain. Even if you have good visibility, users will look elsewhere to buy once they’ve seen your prices.

Although I used to spend hours scrolling through competitor sites to make sure that I was matching all of their prices, it took far too long and probably wasn’t the best use of my time. So instead, I started scraping websites and exporting the pricing information into easily readable spreadsheets.

This saves me huge amounts of time, but also saves my copywriter time as they don’t have to do as much research. We usually outsource the scraping, as we don’t really trust ourselves to do it properly! The most important aspect of this process is having the data in an easily readable format. Spreadsheets are great, but even they can become too muddled up with unnecessary information.

Enriched Web Data for Lead Generation

We use a variety of different sources and data to get our clients more leads and sales. This is really beneficial to our clients that include national and international brands who all use this information to specifically target an audience, boost conversions, increase engagement and/or reduce customer acquisition costs.

Web data can help you know which age groups, genders, locations, and devices convert the best. If you have existing analytics already in place, you can enrich this data with data from around the web, like reviews and social media profiles, to get a more complete picture. You’ll be able to use this enriched web data to tailor your website and your brand’s message so that it instantly connects to who your target customer is.

For example, by using these techniques, we estimate that our client Super Area Rugs will increase their annual revenue by $450,000.

Web Data for Competitor Monitoring

The coupon business probably seems docile from the outside but the reality is that many sites are backed by tens of millions of dollars in venture capital and there are only so many offers to go around. That means exclusive deals can easily get poached by competitors. So we use scraping to monitor our competition to ensure they’re not stealing coupons from our community and reposting them elsewhere.

Both the IT and Legal departments use this data–in IT, we use it more functionally, of course. Legal uses it as research before moving ahead with cease and desist orders.

And there you have it. Real use cases of web data helping companies with competitive pricing, competitor monitoring, and increasing conversion for sales. Keep in mind that it’s not just about having the web data, it’s also about quality and using a reputable company to provide you with the information you need to increase your revenue.

Source:https://blog.scrapinghub.com/2016/11/10/how-you-can-use-web-data-to-accelerate-your-startup/

Data Mining Services

Data Mining Services

The aim of the data mining process is to collect the information from reliable online sources as per the requirement of the customer and convert it to a structured format for the further use. The major source of data mining is any of the internet search engine like Google, Yahoo, Bing, AOL, MSN etc. Many search engines such as Google and Bing provide customized results based on the user’s activity history. Based on our keyword search, the search engine lists the details of the websites from where we can gather the details as per our requirement.

Collect the data from the online sources such as Company Name, Contact Person, Profile of the Company, Contact Phone Number of Email ID Etc. are doing for the marketing activities. Once the data is gathered from the online sources into a structured format, the marketing authorities will start their marketing promotions by calling or emailing the concerned persons, which may result to create a new customer. So basically data mining is playing a vital role in today’s business expansions. By outsourcing the data entry and its related works, you can save the cost that would be incurred in setting up the necessary infrastructure and employee cost.

Source:https://www.isnare.com/?aid=1839547&ca=Internet

Understanding URL scraping

Understanding URL scraping

URL scraping is the process where you automatically extract and filter URLs of WebPages that have specific features. The features that you are looking for vary depending on your goal. For example, if you are looking for a site where you can place your comment and get back link juice, you should go for WebPages that allow dofollow comments.

Techniques for URL scraping

There are many techniques that you can use to get the URL that you are looking for. Some of these techniques include:

Copy pasting: this is where you visit a given site and check whether it has the features that you are looking for. For example, if you are interested in dofollow links, you should visit a number of sites and find out if they have your target links. You should then identify the ones that have the features that you are looking for and compile a list.

Text grepping: this is a technique that allows you to search plain text on websites that match a regular expression. Although, the technique was designed for Unix, you can also use it on other operating systems.

HTTP programming: here you retrieve the WebPages that have the features that you are looking for. You should then note the URL of the pages. To retrieve the pages you have to post HTTP requests using a remote server that uses socket programming.

HTML Parser: a HTML parser allows you to mine data by detecting a common template, script or code on a specific website or Webpage. To be able to detect the script or code you have to use one of the many programming languages: HTQL, Java, PHP, XQuery and Python. Once the data is extracted, it's translated and packaged in a way that you are able to easily understand it.

DOM parsing: This is a technique where you retrieve dynamic content that has been generated by client side scripts that execute in a web browser such as Google Chrome, Mozilla Firefox or any other browsers.

URL scraping software: this is the easiest way of scraping URLs as all you need is high quality software that will do all the work for you. You should identify the features that you are interested in and then give command to the software. The software will go through all the sites on the internet and extract the URLs of the pages that have your target features.

We have plenty of information on CPV and Internet Marketing; therefore, if you are looking for URL Scraper tools for PPV you should highly consider visiting our website.

Source:http://www.amazines.com/article_detail.cfm/6180373?articleid=6180373