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Last updated: June 1, 2015
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  1. Pavel Logacev

    Pavel Logacev

    Data Science | Statistics | R Programming

    Germany - Last active: 1 day ago - Tests: 4 - Portfolio: 3

    I have a PhD in Cognitive Science and a MSc in Computational Linguistics. I further have several years of experience in statistical data analysis and software development in R. I have developed software in pure R as well as in C/C++/Rcpp, with a focus on the implementation of machine learning algorithms and statistical techniques. I enjoy understanding all kinds of data, as well as helping others understand it and convert it into actionable intelligence. I am particularly interested in statistical consulting regarding the analysis of experimental data, such as from psychology experiments, usability studies or A/B testing in advertisement and e-commerce. I can help you with anything from simple ANOVAs or linear mixed effects models in lme4 to Bayesian methods in RStan. I have experience in analyzing and reporting on data from sectors as diverse as psychology, education, health, finance, SEO and E-commerce. Most recently, I have analyzed online user behavior for, and created a Bayesian model of conversion and profitability to manage campaigns on Google Adwords. Take a look at my code on my github profile:

    $35.00 /hr
    417 hours
  2. Janet Prumachuk

    Janet Prumachuk

    Data scientist

    United States - Last active: 1 month ago - Portfolio: 3

    I am currently studying Data Science at Columbia University's Data Science Institute. I have a masters in Statistics from NYU's Stern School of Business and a bachelors in Computer Science. I also have a certification in web development from NYU and I have completed the graphic design basic core at Parsons. Previously I worked in the technology division of a global investment bank where among other things I led the development of an analytic reporting and data warehouse application for the private wealth management business. More recently my focus has been on data visualization and machine learning. I am interested in data science for social impact and in creating data-driven tools and analytics for the general consumer.

    $50.00 /hr
    0 hours
  3. Gilles C.

    Gilles C.

    Experienced Web and iOS strategist & developer focused on data science

    Switzerland - Last active: 2 months ago

    I'm a passionate and multifaceted intrapreneur helping create more value out of internet technologies since 1997. My current focus revolves around applying data science to the fields of quantified-self, crowd-funding, the sharing economy and other transformative technologies. I have more than 8 eights web and mobile development and product management experience. Technologies includes Django, Ruby on Rails and iOS.

    $90.00 /hr
    0 hours
  4. David Stephens

    David Stephens

    GIS/Data Analyst

    United Kingdom - Last active: 11/14/2014 - Tests: 2

    Hello, I am a Data Analyst with 5+ years professional experience with a background in scientific research including publishing peer-reviewed papers. I have BSc (1st class honours) in Geographical Information Systems with Computing. I am most interested in contracts that would take advantage of my R skills for data analysis and visualisation. Including: geospatial analysis, statistical modelling, data mining or building shiny data apps. A summary of my skills and experience: - Diverse types of research including geospatial analysis, statistical modelling, image analysis, GIS. - Daily use of R with experience of packages such as: dplyr, ggplot2, caret, sp, rgdal, gstat. - Developing interactive data tools using R’s ‘Shiny’ framework - Also have experience scripting in Python and SQL Statisitcs: - Linear regression, principal component analysis, t-tests. - Machine learning algorithms (random forest, neural networks) - Cluster Analysis (unsupervised classification) - Non-parametric significance testing (monte-carlo simulations) - Geo-statistical Interpolation (kriging) Other: - Image Analysis: Object-based image segmentation - Textural analysis for pattern recognition - Working with PostgreSQL/postGIS databases - Software: ESRI ArcGIS; Erdas Image; GRASS; QGIS; eCognition; SPSS.

    $40.00 /hr
    0 hours
  5. Damian M.

    Damian M.

    Machine Learning Pro

    United States - Last active: 12/22/2014 - Tests: 1 - Portfolio: 5

    You should only hire me if you want a Data Scientist to create a solution to your problem. Math & Statistics: machine learning, statistical modeling, experiment design, Bayesian inference, Supervised learning: (decision tees, random forests, logistic regression), Unsupervised learning: (clustering, dimensionality reduction), Optimization: (gradient descent and variants) Programing & Database: Computer science fundamentals, Python, R, SQL, NoSQL, relational algebra, parallel databaes and parallel query processing, MapReduce concepts, Hadoop and Hive/Pig, custom reducers Domain Knowledge & Soft Skills: Passionate about the business, curious about data, influence without authority, hacker mindset, problem solver, strategic, proactive, creative, innovative and collaborative Communication & Visualization: Able to engage with senior management, story telling skills, translate data-driven insights into decisions and actions, visual art design, visualization (D3.js, ggplot, Tableau)

    $300.00 /hr
    0 hours
  6. Chloe Gordon

    Chloe Gordon

    Data Visualization Designer

    United States - Last active: 03/22/2014

    I provide consulting services for elegant quantitative information visualizations suitable for investors, clients, and key stake-holders. I use the statistical language R for better control over the design elements of a set of data in comparison of using Excel alone.

    $66.67 /hr
    0 hours
  7. Igor M.

    Igor M.

    Russia - Last active: 2 months ago - Tests: 1

    I have over 14 years of IT experience as Analyst. I’m currently studying towards a Data Science Specialization from Johns Hopkins offered via Coursera. My coursework focuses on programming with R and statistical analysis. Skills: - R programming (code, functions) - Getting and Cleaning Data (from csv, txt, xlsx, websites and XML/HTML documents and etc) - Exploratory Data Analysis (observefd research, visualiastions, summary statistic, etc) - Statistical Inference Specialties: - Statistical Analysis - Predictive Analytics - Database Research - Socio-economic Research - Demographic Research

    $13.33 /hr
    0 hours
  8. Eugene Egorov

    Eugene Egorov

    Statistics | Data Science | R Programming

    Russia - Last active: 2 months ago - Tests: 1

    I enjoy understanding all kinds of data, as well as helping others understand it and convert it into powerful decisions. I have developed software in pure R and combine R with web. I can help you with anything from simple ANOVAs or to Bayesian methods. Also I have deep understanding of quantitate finance field.

    $23.00 /hr
    0 hours