0.8.15

New Features

• New sample set and binary quadratic model serialization (version 3.0.0)
• Serialization of numpy objects in SampleSet.info and BinaryQuadraticModel.info

Deprecated

• Sample set serialization version 2.0.0
• Binary quadratic model serialization version 2.0.0

0.8.14

Fixes

• Fix num_occurrences not being aggregated correctly in SampleSet.aggregate

0.8.13

New Features

• TrackingComposite, a new composite that records inputs and outputs for testing
• NullSampler, a new sampler that always returns an empty sample set
• child_structure_dfs function that searches child samplers for a structured
• HigherOrderComposite now supports the initial_state keyword argument
• BinaryQuadraticModel.is_writeable flag that toggles whether the BQM is treated as immutable or not
• SampleSet.is_writeable flag that toggles whether the sample set is treated as immutable or not

0.8.12

New Features

• SampleSet.resolve method that resolves any futures the sample set was constructed from.
• SampleSet is now pickleable in python2

Fixes

• ran_r now creates vectors of the correct size.
• BQM.from_numpy_vectors now checks the size of the input vectors for correctness.
• SampleSets with unresolved futures now block before pickling.

0.8.11

Fixes

• SampleSet.from_serializable now correctly deserializes tuple variables
• SampleSet.aggregate now correctly preserves order
• Variables.relabel now ignores unknown labels
• BinaryQuadraticModel.from_serializable now correctly deserializes BinaryQuadraticModel.info

New Features

• ran_r function to generate RANr binary quadratic models
• SampleSet.slice method to create a new sample set with rows sliced according to the standard Python slicing syntax
• as_vartype function to cast permitted inputs to a valid Vartype enum

0.8.10

Fixes

• SampleSet.from_serializable now correctly preserves SampleSet.info

New Features

• SampleSet.lowest method which returns a new sample set containing the lowest energy samples

0.8.9

Fixes

• SampleSet.samples now returns an iterator. This is a backwards-compatibility fix and is a deprecated feature.

0.8.8

New Features

• combinations bqm generator
• SampleSet.samples now returns an indexable object
• assert_sampleset_energies testing function
• BinaryQuadraticModel.from_networkx_graph method
• SampleSet.append_variables method

Bug Fixes

• Fix bug in Variables.__contains__ that raised a keyerror rather than returning False

0.8.7

New Features

• When constructing a sample set using SampleSet.from_samples, labels are sorted (if they are the same type). Controlled by sort_labels keyword argument
• Support simplejson encoding
• None can now optionally pass through graph_argument decorator
• chimera_anticluster bqm generator now supports Chimera subgraphs
• Random generator functions now allow the user to specify a seed
• Added RoofDualityComposite which uses roof duality to fix some variables in the bqm

Fixes

• Printing now works for Response objects
• SampleSet.relabel_variables now correctly resolves the future if the sample set was constructed from .from_future

0.8.6

New Features

• TruncateComposite which filters high energy solutions out of the sample set to speed up post-processing
• BinaryPolynomial class for representing higher-order problems
• PolySampler abstract base class for sampling binary polynomials
• PolyScaleComposite binary polynomial version of ScaleComposite
• PolyTruncateComposite binary polynomial version of
  TruncateComposite
• SampleSet.data_vectors property has been restored
• New serialization for SampleSet and BinaryQuadraticModel including a bytes serialization for SampleSet
• New DimodJSONDecoder and dimod_object_hook, and refactored DimodJSONEncoder

Fixes

• SpinReversalTransformComposite now correctly uses the flipped bqm
• Can now print large samplesets without triggering a recursion error

Deprecated

• Binary quadratic model sampling in binary polynomial samplers will be removed in 0.9.0
• SpinReversalTransformComposite now ignores the spin_reversal_variables keyword argument and it will be removed in 0.9.0
• Serialization has been refactored, the bqms and sample sets serialized with the 1.0.0 format are supported until 0.9.0