Statistical process for estimating the relationships between a dependent variable and one or more independent variables. Some of the models used are: logistic, generalized, boosted... We used it in many of our products and often it is a robust starting point method.
Models inspired by biological neural networks used to estimate complex functions with large number of inputs.
Models used for classification and regression by combining multiple decision tress into ensembles.
Panel data contain observations of multiple phenomena observed over multiple time periods for the same individuals.
Unsupervised machine learning techniques. K-means and hierarchical clustering are used in several projects. PCA is used to reduce datasets dimensionality.
Algorithms that can provide a sufficiently good solution to an complex optimization problem. Examples: simulated annealing, genetic algorithms...
Programming languages and tools that are used for statistical models, data analysis and visualization.
Various general-purpose and object-oriented programming languages are used for algorithms development and back end implementation.
We have experience with many front-end tools. Eaxamples are: Tableau (Server and Desktop) that we connected to many different data sources including MS SQL and ExaSolution databases; Jedox, a cell-oriented, multi-dimensional in-memory OLAP server and BI tool; SpagoBI and Pentaho, examples of open source BI suites.
Microsoft SQL Server is well known relational database management system. ExaSolution is in-memory, column-oriented, relational database management system known for high performance and self-optimization.
NoSQL databases are increasingly used in big data and real-time web applications. We have experience in graph databases (Neo4J) and Document databases (MongoDB)
ASP.NET MVC is primary technology used for Web applications back end development. Entity Framework is used for building database models and data access layer.
Modern and responsive web interfaces are created using JQuery, HTML and CSS with help of Bootstrap framework.