Sage is a free open-source mathematics software system licensed under the GPL. It combines the power of many existing open-source packages into a common Python-based interface.Mission: Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab.
Management love their metrics. The thinking goes something like this, "We need a number to measure how we’re doing. Numbers focus people and help us measure success." Whilst well intentioned, management by numbers unintuitively leads to problematic behavior and ultimately detracts from broader project and organizational goals. Metrics inherently aren’t a bad thing; just often, inappropriately used. This essay demonstrates many of the issues caused by management’s traditional use of metrics and offers an alternative to address these dysfunctions.
Finally all the stars have aligned and I can confidently devote some time for back-testing of new trading systems, and Support Vector Machines (SVM) are the new “toy” which is going to keep me busy for a while.
To implement the kind of storage which stores strings as the search keys , there is a need to have special data structures which can store the strings efficiently and the searching of data based on the string keys is easier, efficient and faster. One such data structure is a tree based implementation called Trie.