Aaron Clauset
University of Colorado Boulder
Machine learningMathematicsComputer scienceRandom graphBiology
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Publications 114
#1Andrew J Kavran (CU: University of Colorado Boulder)
#2Aaron Clauset (CU: University of Colorado Boulder)H-Index: 30
Large-scale biological data sets, e.g., transcriptomic, proteomic, or ecological, are often contaminated by noise, which can impede accurate inferences about underlying processes. Such measurement noise can arise from endogenous biological factors like cell cycle and life history variation, and from exogenous technical factors like sample preparation and instrument variation. Here we describe a general method for automatically reducing noise in large-scale biological data sets. This method uses ...
Lewis Fry Richardson argued that the frequency and severity of deadly conflicts of all kinds, from homicides to interstate wars and everything in between, followed universal statistical patterns: their frequency followed a simple Poisson arrival process and their severity followed a simple power-law distribution. Although his methods and data in the mid-20th century were neither rigorous nor comprehensive, his insights about violent conflicts have endured. In this chapter, using modern statistic...
Anthropology A new discovery provides rare evidence of symbolic behavior in Neanderthal communities and extends the record further geographically and temporally across Europe. Rodriguez-Hidalgo et al. analyzed recently unearthed Spanish imperial eagle phalanges, which were found along the Iberian Peninsula, and inferred that Neanderthal communities used these talons for symbolic purposes. Neanderthals most likely cut the eagle phalanges to extract the talon, presumably for use as pendants. These...
Social Sciences Street protests and popular marches are an important form of political expression, and how they are measured shapes our ability to understand their social significance. Fisher et al. review the growing research on protest events and crowd forming, with a focus on events following the 2016 U.S. election. They describe best-practice methods for measuring protest size and protester motivation and making such protest data publicly available in real time. Such methods help us understa...
#1Amir GhasemianH-Index: 3
#2Homa HosseinmardiH-Index: 7
Last. Aaron ClausetH-Index: 30
view all 5 authors...
Most real-world networks are incompletely observed. Algorithms that can accurately predict which links are missing can dramatically speedup the collection of network data and improve the validity of network models. Many algorithms now exist for predicting missing links, given a partially observed network, but it has remained unknown whether a single best predictor exists, how link predictability varies across methods and networks from different domains, and how close to optimality current method...
Social Sciences Proponents of gene drive technology argue that it could revolutionize pest management, but how will it be received by the public? Jones et al. used a representative sample to assess public attitudes in the United States toward genetically modified agricultural insect pests in general and gene drives specifically. When informed of the potential risks and benefits of gene drives, respondent support or opposition depended on whether the spread of a gene drive could be carefully limi...
Research Methods Video data provides insights into the social dynamics of wild animals, but processing large video datasets can be expensive and labor intensive. Using a deep convolutional neural network, Schofield et al. developed an automated pipeline to detect, track, and recognize individual animals from video in the wild. They demonstrate and evaluate this approach using a multiyear chimpanzee dataset. This system allowed researchers to monitor individual animals and automatically extract b...
Social Sciences In a world of increasing economic inequality, how does the public perceive the causes and fairness of wealth disparity? To measure the effect of unequal outcomes on individual perceptions of fairness and inequality, Molina et al. devised a card game that separates the equality of opportunity from game outcomes, player skill, and luck. In this setting, players who were dealt a great hand were more likely to (incorrectly) attribute their winnings to their own talent rather than to ...
Cannabis The cultivation of cannabis extends back into distant prehistory. During excavations at a cemetery on the Pamir Plateau on the border of China and Tajikistan, Ren et al. found cannabinoid oils in wooden braziers. The finding is consistent with psychoactive cannabis use in burial rituals as early as 500 BCE. The cannabis featured high levels of THC (tetrahydrocannabinol)—higher than in wild varieties of the plant. Artifacts recovered from the burials as well as isotopic evidence from hum...