NACC is a large, longitudinal dataset for neurodegentitive disease as a project in collaboration with Dr. Alyssa Weakley at UC Davis.

Dr. Alyssa Weakley is interested in

• Early Cognitive Change
• Mild Cognitive Impairment (MCI)

“How early can we detect, using NACC, change?”

dataset construction

• Participants are given a battery of mental capacity tests, these values are tracked over time
• There are also family member questionnaire
• Neuroimaging and biomarker data

Other things tracked in the data—

Naive Bayes is a special class of Baysian Network inference problem which follows a specific structure used to solve classification problems.

The Naive Bayes classifier is a Baysian Network of the shape:

(Why is this backwards(ish)? Though we typically think about models as a function M(obs) = cls, the real world is almost kind of opposite; it kinda works like World(thing happening) = things we observe. Therefore, the observations are a RESULT of the class happening.)

The National Banking Act unified Financial Markets.

natural numbers (\(\mathbb{N}\)) are the counting numbers: 1,2,3,4….

Zero is not part of it; this produces interesting results like set of natural number under addition is not a group because there is no identity (tbh nor inverse (inverse of 1 is -1 which is not in the set.))

The nsm theory is a theory that…

1. claims that there exists a set of semantic primes and logic universal across languages which is indefinable by other words within the language
2. which, as a corollary, resolves the epistemological problem that if all words are defined by other words in the language there will (why?) be no connection to the real world

the theory of NSM rests on…

two pillars of NSM theory

existence of semantic primes

The existence of semantic primes is codified more formally as the strong version of the Lexicalization Hypothesis.