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Spartan Daily, October 18, 1985
Volume 85, Issue 36https://scholarworks.sjsu.edu/spartandaily/7357/thumbnail.jp
Efficient Correlated Topic Modeling with Topic Embedding
Correlated topic modeling has been limited to small model and problem sizes
due to their high computational cost and poor scaling. In this paper, we
propose a new model which learns compact topic embeddings and captures topic
correlations through the closeness between the topic vectors. Our method
enables efficient inference in the low-dimensional embedding space, reducing
previous cubic or quadratic time complexity to linear w.r.t the topic size. We
further speedup variational inference with a fast sampler to exploit sparsity
of topic occurrence. Extensive experiments show that our approach is capable of
handling model and data scales which are several orders of magnitude larger
than existing correlation results, without sacrificing modeling quality by
providing competitive or superior performance in document classification and
retrieval.Comment: KDD 2017 oral. The first two authors contributed equall
Performance of two transferred modules in the Lagunera Region: Water relations
Water policy / Performance / Privatization / Irrigation systems / Operations / Maintenance / Irrigation efficiency / Water users' associations / Water rights / Water allocation / Water supply / Water distribution
ECONOMIC DISCOVERY IN FEDERALLY SUPPORTED IRRIGATION DISTRICTS: A TRIBUTE TO WILLIAM E. MARTIN AND FRIENDS
Ex post evaluation of economic projections validates our shared understanding of economic methodology and methods. The recent economic history of Central Arizona Project (CAP) agriculture reveals the predictive power of economic reasoning and its policy impotence within a political environment intent on obtaining its share of federally allocated water. The financial inability and unwillingness of large irrigation districts to pay for CAP water under existing federal rules produced an urban tax- and rate-payer controlled CAP decades earlier than planned. Yet irrigation districts remain a large residual buyer of CAP water under new pricing and allocation rules. Unfortunately, water markets remain an underutilized and distrusted tool in the water development game.Resource /Energy Economics and Policy,
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