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@ -2,29 +2,10 @@ This file contains details of the changes in each new version of PRISM, |
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including development and beta versions. For a less detailed overview |
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of the main changes in each public release, see the file VERSIONS.txt. |
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----------------------------------------------------------------------------- |
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Version 3.3.beta1 (released 20/5/2009) (svn: trunk rev 1066) |
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----------------------------------------------------------------------------- |
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Ongoing changes: |
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* LTL model checking for MDPs |
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* CTL model checking |
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Latest changes (reverse chronological): |
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[correct wrt svn rev 901] |
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* Improvements to memory handling, especially in sparse/hybrid engines |
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* Updated JFreeChart library |
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* Multiple -const switches allowed at command-line |
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* Efficiency improvements to precomputation algorithms |
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* Added symmetry reduction functionality |
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* New -exportbsccs option |
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* Initial state info for explicit import is now via -importlabels |
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* Added prism2html/prism2latex tools (in etc/scripts) |
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* Transient probabilities computation for DTMCs |
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* Sparse/hybrid versions of instantaneous reward properties (R=?[I=k]) for DTMCs |
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* Easier viewing of model checking results in GUI |
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* Steady-state properties/operators for DTMCs |
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* New language parser: |
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- improved efficiency, especially on large/complex models |
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- more accurate error reporting |
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@ -32,24 +13,35 @@ Latest changes (reverse chronological): |
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- error highlighting |
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- line numbers |
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- undo/redo feature |
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* Expanded property specification language |
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- LTL (and PCTL*) now supported |
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- arbitrary expressions allowed, e.g. 1-P=?[...] |
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- support for weak until (W) and release (R) added |
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- steady-state operators (S=?[...], R=?[S]) allowed for DTMCs |
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- optional semicolons to terminate properties in properties files |
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* Modelling language changes: |
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- cleaner notation for functions, e.g. mod(i,n), not func(mod,i,n) |
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- function names can be renamed in module renaming |
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- language strictness: updates (x'=...) must be parenthesised |
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- ranges (x=1..3,5) no longer supported |
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- added conversion tool for old models (etc/scripts/prism3to4) |
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* Expanded property specification language |
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- arbitrary expressions allowed, e.g. 1-P=?[...] |
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- support got weak until (W) and release (R) added |
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- optional semicolons to terminate properties in properties files |
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- steady-state operators (S=?[...], R=?[S]) allowed for DTMCs |
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* Other minor technical changes to language: |
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- implication allowed in any expression (not just properties) |
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- floor/ceil are now identifiers, not keywords |
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- equality and relational operators separated in priority |
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- precedence: >, <, >=, <= now have priority over =, != |
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- relational operators now have precedence over equality operators |
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- better but slightly different parsing of problem cases like "F<=a b" |
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* Improvements to memory handling, especially in sparse/hybrid engines |
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* Updated JFreeChart library |
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* Multiple -const switches allowed at command-line |
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* Efficiency improvements to precomputation algorithms |
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* Added symmetry reduction functionality |
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* New -exportbsccs option |
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* Initial state info for explicit import is now via -importlabels |
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* Added prism2html/prism2latex tools (in etc/scripts) |
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* Sparse/hybrid versions of instantaneous reward properties (R=?[I=k]) for DTMCs |
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* Easier viewing of model checking results in GUI |
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* Steady-state/transient probability computation for DTMCs |
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----------------------------------------------------------------------------- |
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Version 3.2.beta1 (released 25/2/2008) (svn: trunk rev 568) |
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----------------------------------------------------------------------------- |
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@ -77,7 +69,8 @@ Version 3.2.beta1 (released 25/2/2008) (svn: trunk rev 568) |
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- ability to display cumulated time/rewards |
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- new "Configure view" dialog |
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- easier selection of next step (double click) |
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* Resizeable experiment results table |
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* Resizeable experiment results table |
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* Function "log" for use in expressions |
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----------------------------------------------------------------------------- |
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Version 3.1.1 (5/4/2007) (svn: derived from 3.1 tag) |
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Dave Parker
17 years ago