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Night Ride - April 18, 1775 Paul Revere and William Dawes.

Note: similarity indexes may not specify the 4 NIST specifications of a similarity metric .

This list is not exhaustive.

Return the Average Value One possible solution is to return the average value in the neighborhood, i.e. $$ \mathbb{M}_{k}(q) = \frac{1}{k} \sum_{i=1}^{k} t_i $$ We can improve this by using weighted \(k-NN\): $$ \mathbb{M}_{k}(q) = \frac{ \sum_{i=1}^{k} \…

Return the Average Value One possible solution is to return the average value in the neighborhood, i.e. $$ \mathbb{M}_{k}(q) = \frac{1}{k} \sum_{i=1}^{k} t_i $$ We can improve this by using weighted \(k-NN\): $$ \mathbb{M}_{k}(q) = \frac{ \sum_{i=1}^{k} \…

When you have features taking different range if values, you may have odd predictions.

When you have features taking different range if values, you may have odd predictions.

Majority Voting The \(k\) nearest neighbors model predicts the target level from the majority vote from the set of the \(k\) nearest neighbors to the query \(q\).

Majority Voting The \(k\) nearest neighbors model predicts the target level from the majority vote from the set of the \(k\) nearest neighbors to the query \(q\).

Similarity-based learning is intuitive and gives people confidence in the model.

Similarity-based learning is intuitive and gives people confidence in the model.

Allows us to weight by review population size.

\(X\) is a binomial random variable if it takes the values \(0, 1, 2, …, n\) and $$ \mathbb{P}\{X = k\} = { n \choose k } \cdot p^k \cdot (1 - p)^{n-k} $$ Sanity Check: Do the probabilities sum to 1?

Bernoulli Process A Bernoulli Process is a sequence of independent \({0, 1}\) - valued random variables \(X_1, X_2, X_3, …\), e.g. \(0, 0, 1, 0, 1, 1\) A Bernoulli Process does not mandate that the probability distributions of the \(X_i\) be identical.

The Formula By definition… $$ \mathbb{P}(A) = \mathbb{P}(A \cap B) + \mathbb{P}(A \cap B^{c}) $$ From conditional probability … $$ \mathbb{P}(A) = \mathbb{P}(A|B) \ \mathbb{P}(B) + \mathbb{P}(A|B^c) \ \mathbb{P}(B^c) $$ Therefore $$ \mathbb{P}(B|A) = \fra…

Definition Where \( \mathbb{P}(A|B) \) is the probability of event \(A\) given that event \(B\) occurs: $$ \mathbb{P}(A|B) = \frac{\mathbb{P}(A \cap B)}{\mathbb{P}(B)} $$ Notice that if \(P(B) = 0\) then it’s meaningless to condition \(A\) on \(B\).

Description Given a string, find the longest sub-string that contains, at most, two characters.

Momentum involves giving the reader adequately developed and reasonably arranged material for a smooth ride.

Brevity has its limitations.

Beginnings Your shot at intriguing or acclimating the reader.

Classification Remove material that’s not related to the specific subject-thesis.

The Subject The number of words aren’t intuitive to me.

Argument from Consequences If God does not exist, then everything is permitted.

Argument from Consequences If God does not exist, then everything is permitted.

Ambiguity Equivocation How can you be against faith when you take leaps of faith all the time: making investments, trusting friends, and even getting engaged?

Ambiguity Equivocation How can you be against faith when you take leaps of faith all the time: making investments, trusting friends, and even getting engaged?

Emotion Going Outside-In Listeners who listened to the raise-fees message while nodding their heads wanted tution to rise to $646 and claimed that they found the editorial insightful.

While Connectors connect us with new people, Mavens connect us with information.

The Law of the Few From 1995 to 1996, the # of children born in Baltimore with syphillis increased 500%.

The Midnight Ride Afternoon of April 18, 1775: Paul Revere, a silversmith, got word of British planning to raise hell the next day.

Introduction The Tipping Point is the biography of how little things had big effects.

Notes Mediocristan vs Extremistan: In Extremistan, one single observation can disproportionately affect the outcome.

Couples know that a third to a half of all marriages fail, but surely not them!

The problem of induction: a turkey cannot possibly predict what happens on the afternoon before Thanksgiving.

Why Invention?

You need to develop a broad spectrum of style and then be able to move from one end of the spectrum to the other as occasion demands.

Gathering evidence IRL may be expensive.

The Proper Use of Humility Confessing your fallibility but doing nothing about it braggery, not humility.

Myths and Fallacies of 'Personally Identifiable Information'.

Deeper Into Bullshit Unlike Frankfurt’s argument that “the lack of concern to the truth” is the essence of bullshit , unclarifiability is the essence of bullshit.

Need to develop a theoretical understanding of bullshit.

The Dilemma There are wide productivity variations between good programmers and poor ones.

More software projects have gone awry for lack of calendar time than for all other causes combined.

The fiercer the struggle, the more entangling the tar, and no beast is so strong or so skillful but that he ultimately sinks.