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Entity Linking in Investigations


In the world of investigations, the pursuit of truth often involves untangling a complex web of relationships and connections. In recent years, the advent of advanced data analysis techniques has revolutionised the way investigators establish links between individuals, organizations, events, and other entities involved in a case. This blog post provides a high level overview of the different types of entity links and the steps required to create a link between entities.

Understanding Entity Linking

Entity linking, also known as "link analysis" or "relationship mapping," is a sophisticated investigative technique that connects various entities within a dataset to identify meaningful relationships. These entities can encompass names, addresses, phone numbers, financial transactions, social media interactions, and more.

Types of Entity Links

There are different types of links that can be established between different entities in an investigation. Some of the most common ones are:

Direct links

These are links that are based on direct evidence, such as documents, records, statements, or physical traces. For example, a direct link between a person and a location can be established by a hotel receipt, a GPS tracker, a witness testimony, or a fingerprint.

Indirect links

These are links that are based on circumstantial evidence, such as associations, affiliations, similarities, or coincidences. For example, an indirect link between a person and a vehicle can be established by a membership card of a car rental company, a social media post, a common friend, or a matching license plate.

Inferred links

These are links that are based on logical deductions, such as hypotheses, assumptions, or probabilities. For example, an inferred link between a vehicle and a business entity can be established by a hypothesis that the vehicle belongs to the business owner, an assumption that the vehicle was used for business purposes, or a probability that the vehicle was parked near the business location.

Steps in Entity Linking

To link different entities in an investigation, it is important to follow some general steps:

Collect data

The first step is to gather as much data as possible about the entities involved in the investigation. This can include personal information, contact details, financial records, social media profiles, criminal history, etc. The data can be obtained from various sources, such as databases, public records, online platforms, interviews, surveillance, etc.

Analyze data

The second step is to analyze the data and look for any clues or indicators that can suggest a link between different entities. This can include cross-referencing the data, looking for patterns or anomalies, verifying the accuracy and reliability of the data, etc.

Visualize data

The third step is to visualize the data and create a graphical representation of the links between different entities. This can include using charts, graphs, maps, timelines, diagrams, etc. Visualizing the data can help identify the strength and direction of the links, highlight the gaps or inconsistencies in the data, and communicate the findings effectively.

Evaluate data

The fourth step is to evaluate the data and assess the significance and relevance of the links between different entities. This can include weighing the evidence, testing the hypotheses, validating the assumptions, calculating the probabilities, etc. Evaluating the data can help determine the confidence and validity of the links, prioritize the leads or actions to follow up on, and report the conclusions or recommendations.

The Role of Artificial Intelligence (AI)

AI-powered entity linking tools enhance the investigation process by automating entity extraction, resolution, and link analysis. Leveraging machine learning algorithms, these tools expedite the identification of meaningful connections.

Ethical Considerations

While entity linking is a powerful tool, it comes with ethical considerations. Privacy, data protection, and the potential for bias must be carefully navigated in the investigative process.


Linking persons, locations, vehicles and business entities in investigations is not an easy task. It requires careful planning, thorough research, critical thinking, and creative problem-solving. However, by following these steps and using these types of links, investigators can enhance their skills and improve their outcomes.

In the age of information, entity linking stands as a cornerstone of modern investigations. By unravelling connections and revealing hidden truths, this technique empowers investigators to break down complex cases, combat crime, and safeguard society. As technology continues to evolve, the art of entity linking will remain a driving force behind the pursuit of justice.

Disclaimer: The information provided in this blog post is for informational purposes only and should not be construed as legal or professional advice. Readers are encouraged to consult qualified professionals for guidance on specific investigative matters.


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