3795 search results for "gis"

The little non-informative prior that could (be informative)

November 26, 2013
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The little non-informative prior that could (be informative)

Christian Robert reviewed on line a paper that was critical of non-informative priors. Among the points that were discussed by him and other contributors (e.g. Keith O’Rourke), was the issue of induced priors, i.e. priors which arise from a transformation of original parameters, or of observables. I found this exchange interesting because I did something

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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #12)

November 26, 2013
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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #12)

We are converging towards MCMSki IV getting closer and closer to the conference! I hope that by now all intended participants have registered (registration is still open!), found a place where to stay during and around the conference (still feasible!), and booked their flight to Geneva (or nearby). First, please send me asap the  poster abstract

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Bootstrapping for Propensity Score Analysis

November 26, 2013
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Bootstrapping for Propensity Score Analysis

I am happy to announce that version 1.0 of the PSAboot package has been released to CRAN. This package implements bootstrapping for propensity score analysis. This deviates from typical implementations such as boot in that it allows for separate sampling specifications for treatment and control units. For example, in the case where the ratio of treatment-to-control units is...

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Installing rgdal in Ubuntu 13.04

November 26, 2013
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The Geospatial Data Abstraction Library (GDAL) is a workhorse of digital mapping. Written in c++, it underpins many online and desktop geoprocessing programs including QGIS and GeoServer. Through its OGR library, GDAL enables the import and export of most common spatial data formats, including the trusty ESRI Shapefile. These features and more make access to GDAL capabilities critical for...

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Installing rgdal in Ubuntu 13.04

November 26, 2013
By

The Geospatial Data Abstraction Library (GDAL) is a workhorse of digital mapping. Written in c++, it underpins many online and desktop geoprocessing programs including QGIS and GeoServer. Through its OGR library, GDAL enables the import and export of most common spatial data formats, including the trusty ESRI Shapefile. These features and more make access to GDAL capabilities critical for...

Read more »

Not only verbs but also believes can be conjugated

November 26, 2013
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Not only verbs but also believes can be conjugated

Following on from last week, where I presented a simple example of a Bayesian network with discrete probabilities to predict the number of claims for a motor insurance customer, I will look at continuos probability distributions today. Here I follow example 16.17 in Loss Models: From Data to Decisions . Suppose there is a class of risks...

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Getting Started with Mixed Effect Models in R

November 25, 2013
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Getting Started with Multilevel Modeling in R Getting Started with Multilevel Modeling in R Jared E. Knowles Introduction Analysts dealing with grouped data and complex hierarchical structures in their data ranging from measurements nested within participants, to counties nested within states or students nested within classrooms often find themselves...

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Mapping Foodborne Chicago Reports

November 25, 2013
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Mapping Foodborne Chicago Reports

I help out with a project called Foodborne Chicago, where we search twitter for people in Chicago mentioning "food poisoning" and @reply to them with a link where they can file a report with the city of Chicago's Department of Public Health. The applic...

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R: Mapping Super Typhoon Yolanda (Haiyan) Track

November 24, 2013
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R: Mapping Super Typhoon Yolanda (Haiyan) Track

After reading Enrico Tonini post, I decided to map the super typhoon Haiyan track using OpenStreetMap, maptools, and ggplot2. If mapping with googleVis was possible with 13 lines only, that can also be achieved with the packages I used; but because I p...

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rgbif changes in v0.4

November 21, 2013
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The Global Biodiversity Information Facility (GBIF) is a warehouse of species occurrence data - collecting data from a lot of different sources. Our package rgbif allows you to interact with GBIF from R. We interact with GBIF via their Application Programming Interface, or API. Our last version on CRAN (v0.3) interacted with the older version of their API -...

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