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Today we mainly discussed last week's TED AI conference, but also added two properties for attachment and detachment points to the pool backed securities ontology in DER-138. These definitions need more clarification and we need restrictions on tranche for each property once we've completed their definitions in order to complete this resolution.
There are a number of online definitions of these concepts, none are great however. Here is a paper that might be useful in understanding them: structuring_CDO_JCR_oct12.pdf