SHOGUN
4.1.0
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Class DualLibQPBMSOSVM that uses Bundle Methods for Regularized Risk Minimization algorithms for structured output (SO) problems [1] presented in [2].
[1] Tsochantaridis, I., Hofmann, T., Joachims, T., Altun, Y. Support Vector Machine Learning for Interdependent and Structured Ouput Spaces. http://www.cs.cornell.edu/People/tj/publications/tsochantaridis_etal_04a.pdf
[2] Teo, C.H., Vishwanathan, S.V.N, Smola, A. and Quoc, V.Le. Bundle Methods for Regularized Risk Minimization http://users.cecs.anu.edu.au/~chteo/pub/TeoVisSmoLe10.pdf
在文件 DualLibQPBMSOSVM.h 第 49 行定义.
Public 属性 | |
SGIO * | io |
Parallel * | parallel |
Version * | version |
Parameter * | m_parameters |
Parameter * | m_model_selection_parameters |
Parameter * | m_gradient_parameters |
ParameterMap * | m_parameter_map |
uint32_t | m_hash |
Protected 属性 | |
SGVector< float64_t > | m_w |
CStructuredModel * | m_model |
CLossFunction * | m_surrogate_loss |
CSOSVMHelper * | m_helper |
bool | m_verbose |
float64_t | m_max_train_time |
CLabels * | m_labels |
ESolverType | m_solver_type |
bool | m_store_model_features |
bool | m_data_locked |
default constructor
在文件 DualLibQPBMSOSVM.cpp 第 19 行定义.
CDualLibQPBMSOSVM | ( | CStructuredModel * | model, |
CStructuredLabels * | labs, | ||
float64_t | _lambda, | ||
SGVector< float64_t > | W = 0 |
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constructor
model | Structured Model |
labs | Structured labels |
_lambda | Regularization constant |
W | initial solution of weight vector |
在文件 DualLibQPBMSOSVM.cpp 第 25 行定义.
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destructor
在文件 DualLibQPBMSOSVM.cpp 第 51 行定义.
apply machine to data if data is not specified apply to the current features
data | (test)data to be classified |
在文件 Machine.cpp 第 160 行定义.
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apply machine to data in means of binary classification problem
被 CKernelMachine, COnlineLinearMachine, CWDSVMOcas, CNeuralNetwork, CLinearMachine, CGaussianProcessClassification, CDomainAdaptationSVMLinear, CPluginEstimate , 以及 CBaggingMachine 重载.
在文件 Machine.cpp 第 216 行定义.
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apply machine to data in means of latent problem
被 CLinearLatentMachine 重载.
在文件 Machine.cpp 第 240 行定义.
Applies a locked machine on a set of indices. Error if machine is not locked
indices | index vector (of locked features) that is predicted |
在文件 Machine.cpp 第 195 行定义.
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applies a locked machine on a set of indices for binary problems
被 CKernelMachine , 以及 CMultitaskLinearMachine 重载.
在文件 Machine.cpp 第 246 行定义.
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applies a locked machine on a set of indices for latent problems
在文件 Machine.cpp 第 274 行定义.
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applies a locked machine on a set of indices for multiclass problems
在文件 Machine.cpp 第 260 行定义.
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applies a locked machine on a set of indices for regression problems
被 CKernelMachine 重载.
在文件 Machine.cpp 第 253 行定义.
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applies a locked machine on a set of indices for structured problems
在文件 Machine.cpp 第 267 行定义.
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apply machine to data in means of multiclass classification problem
被 CNeuralNetwork, CCHAIDTree, CCARTree, CGaussianProcessClassification, CMulticlassMachine, CKNN, CC45ClassifierTree, CID3ClassifierTree, CDistanceMachine, CVwConditionalProbabilityTree, CGaussianNaiveBayes, CConditionalProbabilityTree, CMCLDA, CQDA, CRelaxedTree , 以及 CBaggingMachine 重载.
在文件 Machine.cpp 第 228 行定义.
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applies to one vector
被 CKernelMachine, CRelaxedTree, CWDSVMOcas, COnlineLinearMachine, CLinearMachine, CMultitaskLinearMachine, CMulticlassMachine, CKNN, CDistanceMachine, CMultitaskLogisticRegression, CMultitaskLeastSquaresRegression, CScatterSVM, CGaussianNaiveBayes, CPluginEstimate , 以及 CFeatureBlockLogisticRegression 重载.
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apply machine to data in means of regression problem
被 CKernelMachine, CWDSVMOcas, COnlineLinearMachine, CNeuralNetwork, CCHAIDTree, CStochasticGBMachine, CCARTree, CLinearMachine, CGaussianProcessRegression , 以及 CBaggingMachine 重载.
在文件 Machine.cpp 第 222 行定义.
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apply structured machine to data for Structured Output (SO) problem
data | (test)data to be classified |
重载 CMachine .
在文件 LinearStructuredOutputMachine.cpp 第 45 行定义.
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Builds a dictionary of all parameters in SGObject as well of those of SGObjects that are parameters of this object. Dictionary maps parameters to the objects that own them.
dict | dictionary of parameters to be built. |
在文件 SGObject.cpp 第 1244 行定义.
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Creates a clone of the current object. This is done via recursively traversing all parameters, which corresponds to a deep copy. Calling equals on the cloned object always returns true although none of the memory of both objects overlaps.
在文件 SGObject.cpp 第 1361 行定义.
Locks the machine on given labels and data. After this call, only train_locked and apply_locked may be called
Only possible if supports_locking() returns true
labs | labels used for locking |
features | features used for locking |
被 CKernelMachine 重载.
在文件 Machine.cpp 第 120 行定义.
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Unlocks a locked machine and restores previous state
被 CKernelMachine 重载.
在文件 Machine.cpp 第 151 行定义.
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A deep copy. All the instance variables will also be copied.
在文件 SGObject.cpp 第 200 行定义.
Recursively compares the current SGObject to another one. Compares all registered numerical parameters, recursion upon complex (SGObject) parameters. Does not compare pointers!
May be overwritten but please do with care! Should not be necessary in most cases.
other | object to compare with |
accuracy | accuracy to use for comparison (optional) |
tolerant | allows linient check on float equality (within accuracy) |
在文件 SGObject.cpp 第 1265 行定义.
uint32_t get_BufSize | ( | ) |
get size of cutting plane buffer
在文件 DualLibQPBMSOSVM.h 第 121 行定义.
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get classifier type
重载 CMachine .
在文件 DualLibQPBMSOSVM.cpp 第 135 行定义.
uint32_t get_cleanAfter | ( | ) |
get number of iterations for cleaning ICP
在文件 DualLibQPBMSOSVM.h 第 148 行定义.
bool get_cleanICP | ( | ) |
get ICP removal flag
在文件 DualLibQPBMSOSVM.h 第 134 行定义.
uint32_t get_cp_models | ( | ) |
get number of cutting plane models
在文件 DualLibQPBMSOSVM.h 第 184 行定义.
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在文件 StructuredOutputMachine.cpp 第 186 行定义.
float64_t get_K | ( | ) |
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float64_t get_lambda | ( | ) |
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returns type of problem machine solves
被 CNeuralNetwork, CRandomForest, CCHAIDTree, CCARTree , 以及 CBaseMulticlassMachine 重载.
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在文件 SGObject.cpp 第 1136 行定义.
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Returns description of a given parameter string, if it exists. SG_ERROR otherwise
param_name | name of the parameter |
在文件 SGObject.cpp 第 1160 行定义.
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Returns index of model selection parameter with provided index
param_name | name of model selection parameter |
在文件 SGObject.cpp 第 1173 行定义.
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BmrmStatistics get_result | ( | ) |
ESolver get_solver | ( | ) |
get training algorithm
在文件 DualLibQPBMSOSVM.h 第 196 行定义.
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uint32_t get_Tmax | ( | ) |
float64_t get_TolAbs | ( | ) |
float64_t get_TolRel | ( | ) |
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If the SGSerializable is a class template then TRUE will be returned and GENERIC is set to the type of the generic.
generic | set to the type of the generic if returning TRUE |
在文件 SGObject.cpp 第 298 行定义.
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check whether the labels is valid.
Subclasses can override this to implement their check of label types.
lab | the labels being checked, guaranteed to be non-NULL |
被 CNeuralNetwork, CCARTree, CCHAIDTree, CGaussianProcessRegression , 以及 CBaseMulticlassMachine 重载.
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maps all parameters of this instance to the provided file version and loads all parameter data from the file into an array, which is sorted (basically calls load_file_parameter(...) for all parameters and puts all results into a sorted array)
file_version | parameter version of the file |
current_version | version from which mapping begins (you want to use Version::get_version_parameter() for this in most cases) |
file | file to load from |
prefix | prefix for members |
在文件 SGObject.cpp 第 705 行定义.
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loads some specified parameters from a file with a specified version The provided parameter info has a version which is recursively mapped until the file parameter version is reached. Note that there may be possibly multiple parameters in the mapping, therefore, a set of TParameter instances is returned
param_info | information of parameter |
file_version | parameter version of the file, must be <= provided parameter version |
file | file to load from |
prefix | prefix for members |
在文件 SGObject.cpp 第 546 行定义.
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Load this object from file. If it will fail (returning FALSE) then this object will contain inconsistent data and should not be used!
file | where to load from |
prefix | prefix for members |
param_version | (optional) a parameter version different to (this is mainly for testing, better do not use) |
在文件 SGObject.cpp 第 375 行定义.
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Can (optionally) be overridden to post-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::LOAD_SERIALIZABLE_POST is called.
ShogunException | will be thrown if an error occurs. |
被 CKernel, CWeightedDegreePositionStringKernel, CList, CAlphabet, CLinearHMM, CGaussianKernel, CInverseMultiQuadricKernel, CCircularKernel , 以及 CExponentialKernel 重载.
在文件 SGObject.cpp 第 1063 行定义.
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Can (optionally) be overridden to pre-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::LOAD_SERIALIZABLE_PRE is called.
ShogunException | will be thrown if an error occurs. |
被 CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool > , 以及 CDynamicObjectArray 重载.
在文件 SGObject.cpp 第 1058 行定义.
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problem type
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Takes a set of TParameter instances (base) with a certain version and a set of target parameter infos and recursively maps the base level wise to the current version using CSGObject::migrate(...). The base is replaced. After this call, the base version containing parameters should be of same version/type as the initial target parameter infos. Note for this to work, the migrate methods and all the internal parameter mappings have to match
param_base | set of TParameter instances that are mapped to the provided target parameter infos |
base_version | version of the parameter base |
target_param_infos | set of SGParamInfo instances that specify the target parameter base |
在文件 SGObject.cpp 第 743 行定义.
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creates a new TParameter instance, which contains migrated data from the version that is provided. The provided parameter data base is used for migration, this base is a collection of all parameter data of the previous version. Migration is done FROM the data in param_base TO the provided param info Migration is always one version step. Method has to be implemented in subclasses, if no match is found, base method has to be called.
If there is an element in the param_base which equals the target, a copy of the element is returned. This represents the case when nothing has changed and therefore, the migrate method is not overloaded in a subclass
param_base | set of TParameter instances to use for migration |
target | parameter info for the resulting TParameter |
在文件 SGObject.cpp 第 950 行定义.
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This method prepares everything for a one-to-one parameter migration. One to one here means that only ONE element of the parameter base is needed for the migration (the one with the same name as the target). Data is allocated for the target (in the type as provided in the target SGParamInfo), and a corresponding new TParameter instance is written to replacement. The to_migrate pointer points to the single needed TParameter instance needed for migration. If a name change happened, the old name may be specified by old_name. In addition, the m_delete_data flag of to_migrate is set to true. So if you want to migrate data, the only thing to do after this call is converting the data in the m_parameter fields. If unsure how to use - have a look into an example for this. (base_migration_type_conversion.cpp for example)
param_base | set of TParameter instances to use for migration |
target | parameter info for the resulting TParameter |
replacement | (used as output) here the TParameter instance which is returned by migration is created into |
to_migrate | the only source that is used for migration |
old_name | with this parameter, a name change may be specified |
在文件 SGObject.cpp 第 890 行定义.
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在文件 SGObject.cpp 第 264 行定义.
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prints all parameter registered for model selection and their type
在文件 SGObject.cpp 第 1112 行定义.
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computes the value of the risk function and sub-gradient at given point
subgrad | Subgradient computed at given point W |
W | Given weight vector |
info | Helper info for multiple cutting plane models algorithm |
rtype | The type of structured risk |
在文件 StructuredOutputMachine.cpp 第 157 行定义.
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1-slack formulation and margin rescaling
subgrad | Subgradient computed at given point W |
W | Given weight vector |
info | Helper info for multiple cutting plane models algorithm |
在文件 StructuredOutputMachine.cpp 第 139 行定义.
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1-slack formulation and slack rescaling
subgrad | Subgradient computed at given point W |
W | Given weight vector |
info | Helper info for multiple cutting plane models algorithm |
在文件 StructuredOutputMachine.cpp 第 145 行定义.
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customized risk type
subgrad | Subgradient computed at given point W |
W | Given weight vector |
info | Helper info for multiple cutting plane models algorithm |
在文件 StructuredOutputMachine.cpp 第 151 行定义.
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n-slack formulation and margin rescaling
The value of the risk is evaluated as
\[ R({\bf w}) = \sum_{i=1}^{m} \max_{y \in \mathcal{Y}} \left[ \ell(y_i, y) + \langle {\bf w}, \Psi(x_i, y) - \Psi(x_i, y_i) \rangle \right] \]
The subgradient is by Danskin's theorem given as
\[ R'({\bf w}) = \sum_{i=1}^{m} \Psi(x_i, \hat{y}_i) - \Psi(x_i, y_i), \]
where \( \hat{y}_i \) is the most violated label, i.e.
\[ \hat{y}_i = \arg\max_{y \in \mathcal{Y}} \left[ \ell(y_i, y) + \langle {\bf w}, \Psi(x_i, y) \rangle \right] \]
subgrad | Subgradient computed at given point W |
W | Given weight vector |
info | Helper info for multiple cutting plane models algorithm |
在文件 StructuredOutputMachine.cpp 第 97 行定义.
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n-slack formulation and slack rescaling
subgrad | Subgradient computed at given point W |
W | Given weight vector |
info | Helper info for multiple cutting plane models algorithm |
在文件 StructuredOutputMachine.cpp 第 133 行定义.
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Save this object to file.
file | where to save the object; will be closed during returning if PREFIX is an empty string. |
prefix | prefix for members |
param_version | (optional) a parameter version different to (this is mainly for testing, better do not use) |
在文件 SGObject.cpp 第 316 行定义.
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Can (optionally) be overridden to post-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::SAVE_SERIALIZABLE_POST is called.
ShogunException | will be thrown if an error occurs. |
被 CKernel 重载.
在文件 SGObject.cpp 第 1073 行定义.
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Can (optionally) be overridden to pre-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::SAVE_SERIALIZABLE_PRE is called.
ShogunException | will be thrown if an error occurs. |
被 CKernel, CDynamicArray< T >, CDynamicArray< float64_t >, CDynamicArray< float32_t >, CDynamicArray< int32_t >, CDynamicArray< char >, CDynamicArray< bool > , 以及 CDynamicObjectArray 重载.
在文件 SGObject.cpp 第 1068 行定义.
void set_BufSize | ( | uint32_t | BufSize | ) |
set size of cutting plane buffer
BufSize | Size of the cutting plane buffer (i.e. maximal number of iterations) |
在文件 DualLibQPBMSOSVM.h 第 115 行定义.
void set_cleanAfter | ( | uint32_t | cleanAfter | ) |
set number of iterations for cleaning ICP
cleanAfter | Specifies number of iterations that inactive cutting planes has to be inactive for to be removed |
在文件 DualLibQPBMSOSVM.h 第 141 行定义.
void set_cleanICP | ( | bool | cleanICP | ) |
set ICP removal flag
cleanICP | Flag that enables/disables inactive cutting plane removal feature |
在文件 DualLibQPBMSOSVM.h 第 128 行定义.
void set_cp_models | ( | uint32_t | cp_models | ) |
set number of cutting plane models
cp_models | Number of cutting plane models |
在文件 DualLibQPBMSOSVM.h 第 178 行定义.
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在文件 SGObject.cpp 第 42 行定义.
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在文件 SGObject.cpp 第 47 行定义.
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在文件 SGObject.cpp 第 52 行定义.
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在文件 SGObject.cpp 第 57 行定义.
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在文件 SGObject.cpp 第 62 行定义.
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在文件 SGObject.cpp 第 67 行定义.
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在文件 SGObject.cpp 第 72 行定义.
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在文件 SGObject.cpp 第 77 行定义.
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在文件 SGObject.cpp 第 82 行定义.
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在文件 SGObject.cpp 第 87 行定义.
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在文件 SGObject.cpp 第 92 行定义.
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在文件 SGObject.cpp 第 97 行定义.
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在文件 SGObject.cpp 第 102 行定义.
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在文件 SGObject.cpp 第 107 行定义.
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在文件 SGObject.cpp 第 112 行定义.
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set generic type to T
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void set_K | ( | float64_t | K | ) |
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void set_lambda | ( | float64_t | _lambda | ) |
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void set_solver | ( | ESolver | solver | ) |
set training algorithm
solver | Type of Bundle Method solver used for training |
在文件 DualLibQPBMSOSVM.h 第 202 行定义.
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Setter for store-model-features-after-training flag
store_model | whether model should be stored after training |
在文件 Machine.cpp 第 115 行定义.
void set_store_train_info | ( | bool | store_train_info | ) |
set enableing/disabling storing training information
store_train_info | Flag enabling/disabling storing training information, Storing training information requires extra computational costs. |
在文件 DualLibQPBMSOSVM.h 第 220 行定义.
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void set_Tmax | ( | uint32_t | Tmax | ) |
void set_TolAbs | ( | float64_t | TolAbs | ) |
void set_TolRel | ( | float64_t | TolRel | ) |
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set verbose NOTE that track verbose information including primal objectives, training errors and duality gaps will make the training 2x or 3x slower.
verbose | flag enabling/disabling verbose information |
在文件 StructuredOutputMachine.cpp 第 198 行定义.
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A shallow copy. All the SGObject instance variables will be simply assigned and SG_REF-ed.
被 CGaussianKernel 重载.
在文件 SGObject.cpp 第 194 行定义.
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Stores feature data of underlying model. Does nothing because Linear machines store the normal vector of the separating hyperplane and therefore the model anyway
重载 CMachine .
在文件 LinearStructuredOutputMachine.cpp 第 78 行定义.
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被 CKernelMachine , 以及 CMultitaskLinearMachine 重载.
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train machine
data | training data (parameter can be avoided if distance or kernel-based classifiers are used and distance/kernels are initialized with train data). If flag is set, model features will be stored after training. |
被 CRelaxedTree, CAutoencoder, CSGDQN , 以及 COnlineSVMSGD 重载.
在文件 Machine.cpp 第 47 行定义.
Trains a locked machine on a set of indices. Error if machine is not locked
NOT IMPLEMENTED
indices | index vector (of locked features) that is used for training |
被 CKernelMachine , 以及 CMultitaskLinearMachine 重载.
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returns whether machine require labels for training
被 COnlineLinearMachine, CHierarchical, CLinearLatentMachine, CVwConditionalProbabilityTree, CConditionalProbabilityTree , 以及 CLibSVMOneClass 重载.
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unset generic type
this has to be called in classes specializing a template class
在文件 SGObject.cpp 第 305 行定义.
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Updates the hash of current parameter combination
在文件 SGObject.cpp 第 250 行定义.
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io
在文件 SGObject.h 第 496 行定义.
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parameters wrt which we can compute gradients
在文件 SGObject.h 第 511 行定义.
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Hash of parameter values
在文件 SGObject.h 第 517 行定义.
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the helper that records primal objectives, duality gaps etc
在文件 StructuredOutputMachine.h 第 223 行定义.
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the model that contains the application dependent modules
在文件 StructuredOutputMachine.h 第 214 行定义.
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model selection parameters
在文件 SGObject.h 第 508 行定义.
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map for different parameter versions
在文件 SGObject.h 第 514 行定义.
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parameters
在文件 SGObject.h 第 505 行定义.
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the surrogate loss, for SOSVM, fixed to Hinge loss, other non-convex losses such as Ramp loss are also applicable, will be extended in the future
在文件 StructuredOutputMachine.h 第 220 行定义.
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verbose outputs and statistics
在文件 StructuredOutputMachine.h 第 226 行定义.
weight vector
在文件 LinearStructuredOutputMachine.h 第 82 行定义.
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parallel
在文件 SGObject.h 第 499 行定义.
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version
在文件 SGObject.h 第 502 行定义.