Insurance fraud detection is a matter of understanding connections.
To uncover scams, investigators look for unusual links between people, events, locations and times. They scour huge, noisy, complex, and often incomplete, datasets to understand which connections are genuine, and which could indicate fraud.
Network visualization – or ‘link analysis’ as it is more commonly called by fraud teams – has long been a vital part of the fraud investigator’s arsenal. A powerful and well-designed link analysis for fraud detection tool is the ideal way to overcome data challenges and investigate fraud in an interactive and intuitive way. If you’re looking for a way to visualize your fraud data, request a trial of our toolkits.
Below is an illustration of how our link analysis toolkits are used to investigate insurance claims.
Most insurance fraud detection systems work in a similar way. Data is collated, rule scored and sorted into three categories: fraud, not fraud and unsure.
A team of analysts then manually reviews the ‘unsures’ – a careful balancing act between keeping genuine customers happy with fast, accurate decisions and preventing real frauds from getting through.
Link analysis, powered by our toolkits, is a great way to view these complex scenarios in a simple format, directly embedded in the investigation workflow.
In a real-world link analysis for fraud detection tool, an investigator would be interested in a large number of data points.
Their precise data model would depend on their business processes, structures, and operations, but some typical elements include:
This model places claims and policies at the top of a hierarchy, with the third party and policyholder information on the next level.
For the purposes of this example, however, we’ll simplify the visual data model:
Our first step is to load our disputed claim, using the hierarchy layout to simplify the view.
In this example, we have two people (Stephen Porter and Julia Rodriguez) claiming for damage to their vehicles. An additional person, Everett Page, is named in the claim as a witness.
After loading a claim, the user is offered the ability to ‘find matches’. This runs a query back to the database (in this example we used the DataStax DSE Graph and Gremlin query language under the hood) to find all other claims sharing any similar attributes:
Doing so returns two other claims – 2015-06-07 and 2015-03-16 – which show matches on the vehicle and address of a claimant in the original case being investigated.
To emphasize unusual connections, we can use our toolkits’ combine feature to merge identical nodes:
This adjusts the layout of our network so we can more easily see unusual connections.
Here we can see our original claimant’s address in Colnbrook Street is associated with an earlier claim. Given they share a surname, however, it’s not really suspicious.
To learn more about link analysis and fraud detection, download our updated white paper. It contains more in-depth examples and best practice advice.
This example is a more suspicious match.
Our witness, Everett Page, shares an address with a man named Walter Stewart, who has previously made a claim relating to one of the vehicles involved in this incident.
At this point, an investigator would probably want to escalate this case for special investigation. We can use a context menu to help our analyst progress this further through the workflow:
Representing data as a network offers an engaging way for analysts to rapidly understand events. By incorporating KeyLines into existing claims management workflow, we have made the process simple and intuitive.
This is a simple example, using synthesized data, of how our graph visualization toolkits can make a complex and high-risk exercise simpler and more intuitive.
With the help of a number of graph visualization techniques, including graph layouts and combos, we have built simplified data from multiple policies into a single chart and identified a potential incidence of fraud.
If you want to try our toolkits on your own data, just request a trial account.
Want to learn more?
Fighting Fraud with Graph Databases webinar recording
This post was originally published some time ago. It’s still popular, so we’ve updated it with new example visualizations to keep it useful and relevant.