Search Results for author: Zachary Friggstad

Found 4 papers, 2 papers with code

On Narrative Information and the Distillation of Stories

1 code implementation22 Nov 2022 Dylan R. Ashley, Vincent Herrmann, Zachary Friggstad, Jürgen Schmidhuber

We then demonstrate how evolutionary algorithms can leverage this to extract a set of narrative templates and how these templates -- in tandem with a novel curve-fitting algorithm we introduce -- can reorder music albums to automatically induce stories in them.

Contrastive Learning Evolutionary Algorithms

Automatic Embedding of Stories Into Collections of Independent Media

1 code implementation3 Nov 2021 Dylan R. Ashley, Vincent Herrmann, Zachary Friggstad, Kory W. Mathewson, Jürgen Schmidhuber

We look at how machine learning techniques that derive properties of items in a collection of independent media can be used to automatically embed stories into such collections.

TAG

A Constant-Factor Approximation for Directed Latency in Quasi-Polynomial Time

no code implementations12 Dec 2019 Zachary Friggstad, Chaitanya Swamy

We also give a better approximation guarantee in the special case of Directed Latency in regret metrics where the goal is to find a path $P$ minimize the average time a node $v$ waits in excess of $c_{rv}$, i. e. $\frac{1}{|V|} \cdot \sum_{v \in V} (c_v(P)-c_{rv})$.

Data Structures and Algorithms

Local Search Yields a PTAS for k-Means in Doubling Metrics

no code implementations29 Mar 2016 Zachary Friggstad, Mohsen Rezapour, Mohammad R. Salavatipour

The most well known and ubiquitous clustering problem encountered in nearly every branch of science is undoubtedly $k$-means: given a set of data points and a parameter $k$, select $k$ centres and partition the data points into $k$ clusters around these centres so that the sum of squares of distances of the points to their cluster centre is minimized.

Clustering

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