Variables now behave like in programming languages and "hide" each other. Variables names can be re-used and will be resolved correctly according to current scope.
Support for syntactic attributes (e.g., S[dcl]) and single variable for agreement (e.g., S[x]\S[x]).
CKY parsing derivations now store complete categories rather than only the logical forms (syntax included).
Multiple assertion checks -- NOTE: running with assertions on decreases performance significantly.
Revise lexical factoring to work with syntactic attributes.
spfdist: a simple distribution framework with no architecture assumptions (written with Mark Yatskar)
Rename framework and packages
Numerous other changes and optimizations
Bug in identifying full parses when using unary rules.
Introduce a readers system to read logical expressions from text. Also, make logical expression equality more flexible. Makes it easier to add new logical expression objects to hierarchy.
Various minor (but important) optimizations.
Add labeled single sentence data item with lexical entries.
Utility to parse a single sentence with a lexicon.
Support for generalized function composition.
Rewrite how the parser handles unary rules: more correct and better re-use of computations.
Fix pruning in SingleSentence.
Fixes and cleaning in LogicLanguageServices. Mostly relevant when working without a close ontology.
Keep the overflows away. Switch all exponentiated computations to log-space.
Fixed a small bug in example GeoQuery experiment.
Revamp joint inference derivations and output: a derivation now includes all possible ways to create a certain result (i.e., it marginalizes over everything except the final result). Injective inference makes certain assumptions to provide a simpler interface. The general joint derivation doesn't support any dynamic programming for semantics evaluation.
Improve joint inference javadocs.
Add approximate/exact inference indication for inference outputs.
Fix bug in TroveHashVector.
Fix bug in LogicalConstant equality.
Fixed inconsistencies in GeoQuery experiments.
Release GeoQuery experiments with unification-based GENLEX. NOTE: these experiments don't re-create the results of Kwiatkowski et al. 2010/2011 as the implementation of GENLEX is different.
Move version info outside of README and build.xml.
Better support for closed and open ontologies
Add option to allow using an ontology or not
Ontologies may now be closed or open
Explicit way to dynamically define new constants outside of .ont files
Consolidate unit tests in a separate project
Remove some unused code
Removing stripping of redundant lambda operators
Simplifying to the canonical form doesn't strip redundant lambda operator.
All implicit lambda operators are always present in the logical form.
Converting a logical form to a string strips lambda operators for readability.
Missing lambda operator in input logical expressions are added.
Safety assertion in various constructors
Improved support for joint inference and situated language
GeoQuery example experiment without the experiment platform -- possibly a better way to get to know the code for some.
Remove old storage mechanism and add support for saving models using serialization, including helper methods in the Model class.
Removed concept of fixed lexical entry.
No distinction between fixed lexical entries and normal ones.
Initialization of seed entries is done using model initializers.
Migrate all creators to inside the class they are creating (as internal classes).
Fix bug with initializing the lexicon.
Remove unused typing features.
Better and more consistent typing validation and type consistency checks across the framework.
Remove support for unary parse rules. Unary operations are now supported only through overloading binary rules. See RuleSetBuilder.
Hash vector improvements
Pairwise hash vector product.
Add method to apply a function all values in the hash vector.
Attach Arxiv publication PDF and BIB files to source code.
Cleaned up using of generics throughout the system. Generic classes should now compatible
Better logging system - all logs are now public and can be controlled from outside SPF without editing SPF's code
Javadocs for many generic classes
Better abstraction in ExPlat's experiment hierarchy