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ASF subversion and git services commented on SOLR-11602: -------------------------------------------------------- Commit 2a2cf4b5e406a1a7dae42e2de2ad0f2d33485d28 in lucene-solr's branch refs/heads/master from [~joel.bernstein] [ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=2a2cf4b ] SOLR-11602: Fix precommit > Add Markov Chain Stream Evaluator > --------------------------------- > > Key: SOLR-11602 > URL: https://issues.apache.org/jira/browse/SOLR-11602 > Project: Solr > Issue Type: New Feature > Security Level: Public(Default Security Level. Issues are Public) > Reporter: Joel Bernstein > Assignee: Joel Bernstein > Fix For: 7.2 > > Attachments: SOLR-11602.patch, SOLR-11602.patch, SOLR-11602.patch > > > Now that Streaming Expressions supports Monte Carlo simulations it would be > useful to also support Markov Chains. This ticket will add support for Markov > Chain simulations. > Here is the syntax: > {code} > let(state0=array(.3, .4, .3), > state1=array(.2, .1, .7), > state2=array(.6, .2, .2), > states=matrix(state0, state1, state2), > m=markovChain(states, 0), > s=sample(m, 500)) > {code} > The Markov chain is initialized with a matrix who's rows represent the > different *states* of the system. The columns represent the probabilities of > changing from one state to another state. > For example if we are in state 1 represented by the array(.2,.1,.7), there is > a .7 percent probability that it will transition to state 2. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org