1. Visualization of Data Relationships for Analysis of Railway Operations
The railway industry has a growing demand for utilizing data to improve operational efficiency and service, such as the maintenance of track and rolling stock or increasing the frequency of train services. Accordingly, Hitachi has developed a technology for the visualization of data relationships in the analysis of railway operations that can combine data from different business systems to perform cross-functional analyses.
In the past, business system data was collected within individual departments, meaning that interdepartmental analysis required the selection of the required data from the large numbers of data items held by other departments. This made analysis difficult because they would not know what the different data meant unless the person doing the work was familiar with all the relevant activities. In response, Hitachi has developed a relationship visualization technique to simplify data analyses that span different activities. The technique assists with the understanding of data by using metadata, value sets, and so on to identify the relationships between data, presenting them as a network graph showing where meanings are the same or strongly correlated, for example.
In the future, Hitachi intends to help make transportation services more efficient and sophisticated by supplying products that incorporate this technique.