Are there projects visualizing and analyzing historical transaction data? I know blockchain.info etc, but I'm looking for things beyond simple timelines of transaction volume and the like. I was thinking towards scientific projects that aim at discovering patterns in the historical data, for instance:


are there addresses that accumulate large amounts of btc?
are there interesting transaction pattern, e. g. prolonged transaction "ping pong" between address pairs, "star patterns" where a single address sends out transactions to a large group of others, etc
are there amounts that seem to get passed on along a long chain of addresses?


Note that those are just examples I made up to illustrate what kind of angle I'm looking for: a more open-ended, scientific analysis rather than trading advice. That same notion makes it hard to search for projects, so I'm hoping that someone might happen to know something.
Check this website. It has summary of the tools available http://block-chain-analysis.com/