Cameron Hill

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We present a fast converging method for distance-based phylogenetic inference, which is novel in two respects. First, it is the only method (to our knowledge) to guarantee accuracy when knowledge about the model tree, i.e bounds on the edge lengths, is not assumed. Second, our algorithm guarantees that, with high probability, no false assertions are made.(More)
Given natural limitations on the length DNA sequences, designing phylogenetic reconstruction methods which are reliable under limited information is a crucial endeavor. There have been two approaches to this problem: reconstructing partial but reliable information about the tree (Mossel in IEEE Comput. Biol. Bioinform. 4:108–116, 2007; Daskalakis et al. in(More)
We investigate how presentation in a free-form medium stimulates free-form thinking and discussion in the classroom. Most classroom presentations utilize slideware (e.g. PowerPoint). Yet, slides add intrusive segregations that obstruct the flow of information. In contrast, in a <i>free-form medium of presentation</i>, content is not separated into rigid(More)
The notion of Turing computable embedding [4] provides an effective way to compare classes of countable structures, reducing the classification problem for one class to that for the other. Most of the known results on non-existence of Turing computable embeddings reflect differences in the complexity of the sentences needed to distinguish among(More)
Consider a connected undirected graph G with n vertices and m edges, where each edge has some probability p of failing. What is the probability that G becomes disconnected under random, independent edge failures? This can also be viewed as a counting problem, except that each item now has an associated weight: in particular, we want to compute the sum of(More)
This paper presents an approach to quantifying the diffusion rate of rubidium in glass microchannels. These types of microchannels are often used in integrated systems (chip and fiber based) which utilize light and rubidium vapor interactions to produce quantum interference phenomena such as slow light. The test platforms reported here were made using glass(More)
We investigate how students engage in free-form web curation as a means of design ideation. Free-form web curation is a spontaneous, improvisational, and divergent creative process that involves choosing, sketching, writing, and assembling elements spatially. We take a design research approach, involving iterative design of a web curation system and(More)
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