Posts Tagged ‘Powers (Imelda)’



March 13th, 2019

GC Capital Ideas Covers Modeling Developments

Posted at 1:00 AM ET

GC Capital Ideas presents a review of our recent stories covering modeling for various perils.

Continue reading…

March 7th, 2019

Building for Resilience: How to Avoid a Catastrophe Model Failure: Part IV

Posted at 1:00 AM ET

powers_imelda_resized

Imelda Powers, Global Chief Catastrophe Modeler

Contact

Valuation Assumptions

There is no database of agreed property, contents or business interruption valuations among vendors or insurers.  Any user’s particular valuation may come from databases of property prices, or rebuild values from claims adjusters and building surveyors. If the model’s assumed valuations are under- or over-estimated, then the damage function may over- or under-compensate in order to balance to historical industry event losses during the model-building process. Consequently, it is important that the user adjust the damage module to reconcile these differences.

Continue reading…

February 28th, 2019

Building for Resilience: How to Avoid a Catastrophe Model Failure: Part III

Posted at 1:00 AM ET

powers_imelda_resized

Imelda Powers, Global Chief Catastrophe Modeler

Contact

If resources permit, an insurer may carry out additional, micro level model suitability analyses - including a review of model hazards and vulnerabilities using the latest scientific literature and engineering studies. Guy Carpenter’s Model Suitability Analysis (MSA)® framework is designed to guide users through such an analysis.

Continue reading…

February 21st, 2019

Building for Resilience: How to Avoid a Catastrophe Model Failure: Part II

Posted at 1:00 AM ET

Imelda Powers, Global Chief Catastrophe Modeler

Contact

Model Suitability Analysis

There is a repertoire of tests, at both the macro and micro levels, to evaluate the merits of a CAT model.  Regardless of resources, insurers should analyze how each test’s result informs their view of risk. Here we review the macro level.

Continue reading…

February 14th, 2019

Building for Resilience: How to Avoid a Catastrophe Model Failure: Part I

Posted at 1:00 AM ET

Imelda Powers, Global Chief Catastrophe Modeler

Contact

Since commercial catastrophe (CAT) models were first introduced in the 1980s, they have evolved as new scientific discoveries and claims insights emerged. Despite the sophisticated nature of each new generation of CAT models, occasionally a model misses a significant loss driver for a particular peril. This occurs when a previously hidden attribute reveals itself through unprecedented intensity. Lessons from such surprises stimulate model improvements as our understanding of the physics of the peril and its damage potential, increase. Through this process, models mature over time.

Continue reading…

September 13th, 2018

Managing Catastrophe Model Change

Posted at 1:00 AM ET

powers_imelda_71x88Imelda Powers, Senior Cat Management Advisor, Asia Pacific, Global Strategic Advisory

Contact

Incorporating new hazard and claims insights can improve the estimates derived from catastrophe models. By re-analyzing historical events using the latest scientific methods or refining claims with more granular geographical and line of business breakdowns, we can update models with the latest expertise and data. But model changes that yield large swings in loss estimates for frequent events must be carefully scrutinized to understand assumptions and processes in order to truly support ownership of risk. Continue reading…

May 17th, 2018

Building for Resilience: How to Avoid a Catastrophe Model Failure

Posted at 1:00 AM ET

Here we bring together our recent multi-part series on model resilience by Guy Carpenter’s Global Chief Catastrophe Modeler, Imelda Powers.

Since commercial catastrophe (CAT) models were first introduced in the 1980s, they have evolved as new scientific discoveries and claims insights emerged. Despite the sophisticated nature of each new generation of CAT models, occasionally a model misses a significant loss driver for a particular peril. This occurs when a previously hidden attribute reveals itself through unprecedented intensity. Lessons from such surprises stimulate model improvements as our understanding of the physics of the peril and its damage potential, increase. Through this process, models mature over time.

Continue reading…

April 26th, 2018

Building for Resilience: How to Avoid a Catastrophe Model Failure: Part IV

Posted at 1:00 AM ET

Imelda Powers, Global Chief Catastrophe Modeler

Contact

Valuation Assumptions

There is no database of agreed property, contents or business interruption valuations among vendors or insurers.  Any user’s particular valuation may come from databases of property prices, or rebuild values from claims adjusters and building surveyors. If the model’s assumed valuations are under- or over-estimated, then the damage function may over- or under-compensate in order to balance to historical industry event losses during the model-building process. Consequently, it is important that the user adjust the damage module to reconcile these differences.

Continue reading…

April 25th, 2018

Building for Resilience: How to Avoid a Catastrophe Model Failure: Part III

Posted at 1:00 AM ET

Imelda Powers, Global Chief Catastrophe Modeler

Contact

If resources permit, an insurer may carry out additional, micro level model suitability analyses - including a review of model hazards and vulnerabilities using the latest scientific literature and engineering studies. Guy Carpenter’s Model Suitability Analysis (MSA)® framework is designed to guide users through such an analysis.

Continue reading…