R shiny apps
- HHS Breach of Unsecured Protected Health Information - data visualisation, co-author: Mateusz Dominiak
- statistical - density, histogram of random variable
- time series - decomposition Trend + Seasional + Random, moving average
- spatial - choropleth, leaflet map
- outliers detection according the quantil
- Employee’s life
- interactive histogram for random variable
- interactive boxplot for choosen factor
- boxplot for choosen factor
- frequency tables for factors
- two-way cross-tables for factors
- Time serie visualisation and forecasting
- interactive plot of time serie
- seasonal plot
- multiplicative and additive decomposition plot
- forecasting with the use of adaptive methods: eponential smoothing (Brown method), Winters, Winters-Holt
- ARIMA - checking stationarity, comparing with Box-Cox transformation, residual diagnostic plots, forecasting
- Sentiment analysis dashboard using tidytext R text mining
- visualisation of word lexicon from
tidytext package
- comparing words in text with choosen lexikon
- word cloud in text
- searching bigrams in text
- word correlation
- RSReduction
- calculation of AUC
- ROC curve plot
- rating scale reduction
R packages
MixedPoisson (co-author: Michal Trzesiok) - carries out the estimation of the parameters in mixed Poisson models
InsuranceData (co-author: Michal Trzesiok) - insurance datasets, which are often used in claims severity and claims frequency modelling. It helps testing new regression models in those problems, such as GLM, GLMM, HGLM, non-linear mixed models etc.
RatingScaleReduction (co-authors: W.W. Koczkodaj, Feng Li) - carries out a new procedure of reducing items in a rating scale called Rating Scale Reduction (RSR)
AffluenceIndex (co-author: A. Saczewska-Piotrowska) - Computes the statistical indices of affluence (richness) and constructs bootstrap confidence intervals for these indices. Also computes the Wolfson polarization index.