Research & Industry Advancements Flashcards

Which CAS research paper introduced the concept of using copulas to model dependency between multiple lines of business for enterprise risk management?

Answer: Venter's 'Tails of Copulas'

Gary Venter's 'Tails of Copulas' is a foundational CAS paper on using copulas to capture tail dependence between lines in multi-line risk aggregation.

In the context of CAS research on inflation-sensitive reserving, 'superimposed inflation' differs from general economic inflation because it:

Answer: Represents claims cost increases beyond general CPI driven by social, legal, or medical utilization factors

Superimposed inflation captures cost escalation specific to insurance claims—nuclear verdicts, medical utilization growth, and attorney involvement—that exceed general price indices.

The actuarial profession's interest in 'fairness constraints' in machine learning pricing models is primarily motivated by:

Answer: Regulatory concern that protected class characteristics may be proxied by predictive variables

Regulators are concerned that variables uncorrelated with protected classes in isolation may act as proxies for race, gender, or religion, leading to unfair discrimination.

CAS research on 'schedule rating' controversies focuses primarily on which concern regarding its actuarial justification?

Answer: Debits and credits often lack empirical support linking them to actual loss experience

Critics argue that many schedule rating modifications are applied without empirical evidence that the rated characteristics actually predict different loss outcomes.

In CAS research on natural language processing (NLP) for claims management, which application has shown the most direct improvement in loss reserving accuracy?

Answer: Mining adjuster notes and medical records to improve claim severity prediction and triage

NLP applied to unstructured adjuster notes and medical records can extract features predictive of claim development that are unavailable in structured databases.

The CAS principle of 'risk classification' requires that a rating variable must be actuarially justified, meaning it must satisfy which primary condition?

Answer: It must be statistically correlated with expected losses and operationally feasible to verify

Actuarial justification for a rating variable requires a demonstrated statistical relationship to loss experience and the practical ability to verify the variable at underwriting.

Which CAS research advancement improved the estimation of loss reserves by explicitly modeling the correlation between accident year development patterns rather than treating them as independent?

Answer: The multivariate lognormal model for correlated development factors

Multivariate lognormal reserving models explicitly capture correlations across accident years in development factors, producing more realistic ranges for aggregate reserves.