Psychological Attributes Network

Explore how personality traits are correlated with each other based on an empirical analysis be Srebrenka Letina. Nodes are personality traits and links are the correlations between them. Correlation indicates the linear association, negative (dashed) or positive (solid), that one personality trait has with another.

Financial Network Metrics

This D3.js chart is a temporal visualization of 24 attributes of a financial network. The network has banks as nodes and a link exists between two banks whenever they partecipated together in granting a loan. The temporal window is from 1984 until 2011. The size of each circle indicates the normalized value of each attribute where normalization is done with respect to the sum over all years. To see the values in numbers you can hover the mouse over the attribute in the legend.

Weapon Trade Network

Explore who buys and who sells weapons at the global level. estimates of trade flows between and within regions for one-year periods, 1955 to 2005 with five year interval. Initially the data is shown by region and if you click on a region you will see the trade flows country-by-country. Values are in US dollars.


My name is Tamer Khraisha and I am originally from the Middle East. I have been living in Europe for the past 12 years, and currently, I am based in Budapest, Hungary. I did my undergraduate studies in finance and economics, which constitute my primary domain of knowledge. After that, I earned a Ph.D. cum laude in Network Science from the Department of Network and Data Science at the Central European University in Budapest. During my Ph.D., I worked on the problem of collective technological innovation as well as on a variety of computational and data-driven projects.


For the past two years, I have been working as a full-time software and data developer at Alphacruncher in Budapest. At Alphacruncher, I work on a variety of tasks including the automation of Extract, Transform, Load (ETL) jobs, documenting and implementing techniques for filtering errors and biases in datasets, writing complex queries for generating SQL views and filtering datasets, matching datasets between different sources, and developing the front-end UI for the data management application DataHub. I have worked with well-known financial datasets such as TAQ, CRSP, COMPUSTAT, IVYDB OptionMetrics, RavenPack, DealScan, and others.


In the medium-long run, I will be pursuing a career which combines scientific research with industrial applications. I want to develop data products derived from the results of scientific analysis of large and interesting datasets. I am also interested in research and applications related to the field of technological innovation which I explored during my PhD studies.


I believe in the power of knowledge sharing as a key to solve nowadays complex problems. And although I like facts and data, I believe in the need for philosophical thinking and human judegment in order to understand our complex systems. Finally, I am a strong advocate of the role of good institutions in driving growth and achieving human progress and prosperity.