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***** MOVED TO GITHUB: http://github.com/frgomes/jquantlib *****
JQuantLib provides a free, open-source and comprehensive framework for quantitative finance. It's a 100% Java translation of QuantLib, which is written in C++. JQuantLib provides pricing valuation of a wide range of asset classes, methods and models.
OpenQuant is an open source backtesting and quantitative / technical analysis platform for time series financial data. It offers a simple tradesystem development framework using open financial data from Yahoo.
JAFF: Just Another Financial Framework. Technical Analysis (studying the price and trading history) of some stock quotes from internet. Neural Network analysis for non-linear prediction and forecasting.
PricingNexus is a Java-based framework thats main purpose is to collect fincancial data - at the moment especially prices - from all over the Internet, to store it in a database and make it via JMS/DB/RMI available using a well defined framework.
P: Using neural nets and looking at intraday data, can we model the future price of a security?
S: Using neural nets in java via the JOONE framework. Data from the opentick API. Map a set of delayed observations to the predicted return at a future time