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Longitudinal Trend Analysis with Historical Public Data

Track changes over time using recurring public data collection to support investigative series and long-term research.

Overview

Capture Data At Regular Intervals

Longitudinal Trend Analysis focuses on recurring collection of publicly available data to build time-series datasets. Instead of one-time snapshots, data is captured at regular intervals so research and journalism teams can track changes across entities, markets, policies, and activities over time. These structured historical datasets support investigative series, trend reporting, and pattern validation.

Longitudinal Trend Analysis Overview

Key Features

Recurring Data Collection

Run scheduled extraction cycles to capture public data at consistent intervals.

Time-Series Dataset Building

Structure data with timestamps to support change-over-time analysis.

Historical Snapshot Archives

Preserve periodic snapshots for audit trails and comparisons.

Multi-Source Trend Feeds

Track trends across multiple public data sources simultaneously.

Change Detection Fields

Capture additions, removals, and value changes between data runs.

Analysis-Ready Outputs

Deliver longitudinal datasets formatted for analytics and newsroom tools.

How It Works

1

Data Collection

We gather real-time, relevant data from various sources, including competitor websites, online marketplaces, social media, and other platforms that align with your needs.

2

Data Normalization

The raw data is standardized and organized to ensure consistency across different sources, making it ready for easy comparison and use.

3

Data Delivery

The structured data is then delivered to you through reports, dashboards, or integrations with your existing tools, ensuring you have the information you need in a usable format.

4

Real-Time Alerts

You can set up automated alerts to be notified when significant changes occur in the data, ensuring you're always aware of important developments.

Learn how our datasets make a difference

Verified Change Tracking

Measure how entities and indicators change across time periods.

Stronger Investigative Evidence

Support investigative series with historical data trails.

Pattern Validation

Confirm trends using repeated observations instead of single snapshots.

Consistent Time Coverage

Maintain structured historical datasets for repeat analysis.

Business Use cases

Investigative Journalists

Track long-term changes across records, disclosures, and listings.

Research Teams

Build time-series datasets for sector and policy trend studies.

Newsrooms

Support multi-part investigative series with historical data.

Watchdog Organizations

Monitor long-term compliance and activity patterns.

TESTIMONIALS

Here's what our customers say about us

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I worked with Grepsr to undertake a one-time extraction of data through web scraping for references made to keywords across four websites of Multilateral Development Banks. Grepsr scraped vast volumes of data over 65,000 PDF documents and provided final files of scraped data in the format I desired. This data scraped by Grepsr will have a profound impact on my research.

Shruti M. Postgraduate Researcher
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Team was able to extract 500 pages of data within 48 hours that would’ve taken my team weeks to do. The concierge service was responsive and helpful. It was affordable.

Nick N. Cloud Chief Growth Officer, Internet
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I struggled a lot with DataMiner and still can’t manage using it. Grepsr literally saved me. It’s simply intuitive and easy to use. I had one page where data was not taken properly. After submitting information on support they fixed that in one day. Such an amazing result even keeping in mind that I am not a paid customer. Thanks a lot!

Kyrylo K. Global Sourcing Specialist
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We routinely conduct detailed and sometimes obscure internet searches and crawls to support our top-end research studies. I have rarely come across a more responsive and professional organization. Grepsr does exactly what they say, faster than promised, and at excellent prices.

David R. CEO, Research
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