REST Resource: models

Resource: Model

JSON representation 
{
  "etag": string,
  "modelReference": {
    object (ModelReference)
  },
  "creationTime": string,
  "lastModifiedTime": string,
  "description": string,
  "friendlyName": string,
  "labels": {
    string: string,
    ...
  },
  "expirationTime": string,
  "location": string,
  "encryptionConfiguration": {
    object (EncryptionConfiguration)
  },
  "modelType": enum (ModelType),
  "trainingRuns": [
    {
      object (TrainingRun)
    }
  ],
  "featureColumns": [
    {
      object (StandardSqlField)
    }
  ],
  "labelColumns": [
    {
      object (StandardSqlField)
    }
  ],
  "bestTrialId": string
}
Fields
etag

string

Output only. A hash of this resource.
modelReference

object (ModelReference)

Required. Unique identifier for this model.
creationTime

string (int64 format)

Output only. The time when this model was created, in millisecs since the epoch.
lastModifiedTime

string (int64 format)

Output only. The time when this model was last modified, in millisecs since the epoch.
description

string

Optional. A user-friendly description of this model.
friendlyName

string

Optional. A descriptive name for this model.
labels

map (key: string, value: string)

The labels associated with this model. You can use these to organize and group your models. Label keys and values can be no longer than 63 characters, can only contain lowercase letters, numeric characters, underscores and dashes. International characters are allowed. Label values are optional. Label keys must start with a letter and each label in the list must have a different key.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
expirationTime

string (int64 format)

Optional. The time when this model expires, in milliseconds since the epoch. If not present, the model will persist indefinitely. Expired models will be deleted and their storage reclaimed. The defaultTableExpirationMs property of the encapsulating dataset can be used to set a default expirationTime on newly created models.
location

string

Output only. The geographic location where the model resides. This value is inherited from the dataset.
encryptionConfiguration

object (EncryptionConfiguration)

Custom encryption configuration (e.g., Cloud KMS keys). This shows the encryption configuration of the model data while stored in BigQuery storage. This field can be used with models.patch to update encryption key for an already encrypted model.
modelType

enum (ModelType)

Output only. Type of the model resource.
trainingRuns[]

object (TrainingRun)

Output only. Information for all training runs in increasing order of startTime.
featureColumns[]

object (StandardSqlField)

Output only. Input feature columns that were used to train this model.
labelColumns[]

object (StandardSqlField)

Output only. Label columns that were used to train this model. The output of the model will have a "predicted_" prefix to these columns.
bestTrialId
(deprecated)

string (int64 format)

The best trialId across all training runs.

ModelReference

Id path of a model.

JSON representation 
{
  "projectId": string,
  "datasetId": string,
  "modelId": string
}
Fields
projectId

string

Required. The ID of the project containing this model.
datasetId

string

Required. The ID of the dataset containing this model.
modelId

string

Required. The ID of the model. The ID must contain only letters (a-z, A-Z), numbers (0-9), or underscores (_). The maximum length is 1,024 characters.

ModelType

Indicates the type of the Model.

Enums
MODEL_TYPE_UNSPECIFIED
LINEAR_REGRESSION Linear regression model.
LOGISTIC_REGRESSION Logistic regression based classification model.
KMEANS K-means clustering model.
MATRIX_FACTORIZATION Matrix factorization model.
DNN_CLASSIFIER DNN classifier model.
TENSORFLOW An imported TensorFlow model.
DNN_REGRESSOR DNN regressor model.
BOOSTED_TREE_REGRESSOR Boosted tree regressor model.
BOOSTED_TREE_CLASSIFIER Boosted tree classifier model.
ARIMA ARIMA model.
AUTOML_REGRESSOR [Beta] AutoML Tables regression model.
AUTOML_CLASSIFIER [Beta] AutoML Tables classification model.
ARIMA_PLUS New name for the ARIMA model.

TrainingRun

Information about a single training query run for the model.

JSON representation 
{
  "trainingOptions": {
    object (TrainingOptions)
  },
  "startTime": string,
  "results": [
    {
      object (IterationResult)
    }
  ],
  "evaluationMetrics": {
    object (EvaluationMetrics)
  },
  "dataSplitResult": {
    object (DataSplitResult)
  },
  "globalExplanations": [
    {
      object (GlobalExplanation)
    }
  ]
}
Fields
trainingOptions

object (TrainingOptions)

Options that were used for this training run, includes user specified and default options that were used.
startTime

string (Timestamp format)

The start time of this training run.
results[]

object (IterationResult)

Output of each iteration run, results.size() <= maxIterations.
evaluationMetrics

object (EvaluationMetrics)

The evaluation metrics over training/eval data that were computed at the end of training.
dataSplitResult

object (DataSplitResult)

Data split result of the training run. Only set when the input data is actually split.
globalExplanations[]

object (GlobalExplanation)

Global explanations for important features of the model. For multi-class models, there is one entry for each label class. For other models, there is only one entry in the list.

TrainingOptions

Options used in model training.

JSON representation 
{
  "maxIterations": string,
  "lossType": enum (LossType),
  "learnRate": number,
  "l1Regularization": number,
  "l2Regularization": number,
  "minRelativeProgress": number,
  "warmStart": boolean,
  "earlyStop": boolean,
  "inputLabelColumns": [
    string
  ],
  "dataSplitMethod": enum (DataSplitMethod),
  "dataSplitEvalFraction": number,
  "dataSplitColumn": string,
  "learnRateStrategy": enum (LearnRateStrategy),
  "initialLearnRate": number,
  "labelClassWeights": {
    string: number,
    ...
  },
  "userColumn": string,
  "itemColumn": string,
  "distanceType": enum (DistanceType),
  "numClusters": string,
  "modelUri": string,
  "optimizationStrategy": enum (OptimizationStrategy),
  "hiddenUnits": [
    string
  ],
  "batchSize": string,
  "dropout": number,
  "maxTreeDepth": string,
  "subsample": number,
  "minSplitLoss": number,
  "numFactors": string,
  "feedbackType": enum (FeedbackType),
  "walsAlpha": number,
  "kmeansInitializationMethod": enum (KmeansInitializationMethod),
  "kmeansInitializationColumn": string,
  "timeSeriesTimestampColumn": string,
  "timeSeriesDataColumn": string,
  "autoArima": boolean,
  "nonSeasonalOrder": {
    object (ArimaOrder)
  },
  "dataFrequency": enum (DataFrequency),
  "includeDrift": boolean,
  "holidayRegion": enum (HolidayRegion),
  "timeSeriesIdColumn": string,
  "timeSeriesIdColumns": [
    string
  ],
  "horizon": string,
  "preserveInputStructs": boolean,
  "autoArimaMaxOrder": string,
  "decomposeTimeSeries": boolean,
  "cleanSpikesAndDips": boolean,
  "adjustStepChanges": boolean
}
Fields
maxIterations

string (int64 format)

The maximum number of iterations in training. Used only for iterative training algorithms.
lossType

enum (LossType)

Type of loss function used during training run.
learnRate

number

Learning rate in training. Used only for iterative training algorithms.
l1Regularization

number

L1 regularization coefficient.
l2Regularization

number

L2 regularization coefficient.
minRelativeProgress

number

When earlyStop is true, stops training when accuracy improvement is less than 'minRelativeProgress'. Used only for iterative training algorithms.
warmStart

boolean

Whether to train a model from the last checkpoint.
earlyStop

boolean

Whether to stop early when the loss doesn't improve significantly any more (compared to minRelativeProgress). Used only for iterative training algorithms.
inputLabelColumns[]

string

Name of input label columns in training data.
dataSplitMethod

enum (DataSplitMethod)

The data split type for training and evaluation, e.g. RANDOM.
dataSplitEvalFraction

number

The fraction of evaluation data over the whole input data. The rest of data will be used as training data. The format should be double. Accurate to two decimal places. Default value is 0.2.
dataSplitColumn

string

The column to split data with. This column won't be used as a feature. 1. When dataSplitMethod is CUSTOM, the corresponding column should be boolean. The rows with true value tag are eval data, and the false are training data. 2. When dataSplitMethod is SEQ, the first DATA_SPLIT_EVAL_FRACTION rows (from smallest to largest) in the corresponding column are used as training data, and the rest are eval data. It respects the order in Orderable data types: https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types#data-type-properties
learnRateStrategy

enum (LearnRateStrategy)

The strategy to determine learn rate for the current iteration.
initialLearnRate

number

Specifies the initial learning rate for the line search learn rate strategy.
labelClassWeights

map (key: string, value: number)

Weights associated with each label class, for rebalancing the training data. Only applicable for classification models.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
userColumn

string

User column specified for matrix factorization models.
itemColumn

string

Item column specified for matrix factorization models.
distanceType

enum (DistanceType)

Distance type for clustering models.
numClusters

string (int64 format)

Number of clusters for clustering models.
modelUri

string

Google Cloud Storage URI from which the model was imported. Only applicable for imported models.
optimizationStrategy

enum (OptimizationStrategy)

Optimization strategy for training linear regression models.
hiddenUnits[]

string (int64 format)

Hidden units for dnn models.
batchSize

string (int64 format)

Batch size for dnn models.
dropout

number

Dropout probability for dnn models.
maxTreeDepth

string (int64 format)

Maximum depth of a tree for boosted tree models.
subsample

number

Subsample fraction of the training data to grow tree to prevent overfitting for boosted tree models.
minSplitLoss

number

Minimum split loss for boosted tree models.
numFactors

string (int64 format)

Num factors specified for matrix factorization models.
feedbackType

enum (FeedbackType)

Feedback type that specifies which algorithm to run for matrix factorization.
walsAlpha

number

Hyperparameter for matrix factoration when implicit feedback type is specified.
kmeansInitializationMethod

enum (KmeansInitializationMethod)

The method used to initialize the centroids for kmeans algorithm.
kmeansInitializationColumn

string

The column used to provide the initial centroids for kmeans algorithm when kmeansInitializationMethod is CUSTOM.
timeSeriesTimestampColumn

string

Column to be designated as time series timestamp for ARIMA model.
timeSeriesDataColumn

string

Column to be designated as time series data for ARIMA model.
autoArima

boolean

Whether to enable auto ARIMA or not.
nonSeasonalOrder

object (ArimaOrder)

A specification of the non-seasonal part of the ARIMA model: the three components (p, d, q) are the AR order, the degree of differencing, and the MA order.
dataFrequency

enum (DataFrequency)

The data frequency of a time series.
includeDrift

boolean

Include drift when fitting an ARIMA model.
holidayRegion

enum (HolidayRegion)

The geographical region based on which the holidays are considered in time series modeling. If a valid value is specified, then holiday effects modeling is enabled.
timeSeriesIdColumn

string

The time series id column that was used during ARIMA model training.
timeSeriesIdColumns[]

string

The time series id columns that were used during ARIMA model training.
horizon

string (int64 format)

The number of periods ahead that need to be forecasted.
preserveInputStructs

boolean

Whether to preserve the input structs in output feature names. Suppose there is a struct A with field b. When false (default), the output feature name is A_b. When true, the output feature name is A.b.
autoArimaMaxOrder

string (int64 format)

The max value of non-seasonal p and q.
decomposeTimeSeries

boolean

If true, perform decompose time series and save the results.
cleanSpikesAndDips

boolean

If true, clean spikes and dips in the input time series.
adjustStepChanges

boolean

If true, detect step changes and make data adjustment in the input time series.

LossType

Loss metric to evaluate model training performance.

Enums
LOSS_TYPE_UNSPECIFIED
MEAN_SQUARED_LOSS Mean squared loss, used for linear regression.
MEAN_LOG_LOSS Mean log loss, used for logistic regression.

DataSplitMethod

Indicates the method to split input data into multiple tables.

Enums
DATA_SPLIT_METHOD_UNSPECIFIED
RANDOM Splits data randomly.
CUSTOM Splits data with the user provided tags.
SEQUENTIAL Splits data sequentially.
NO_SPLIT Data split will be skipped.
AUTO_SPLIT Splits data automatically: Uses NO_SPLIT if the data size is small. Otherwise uses RANDOM.

LearnRateStrategy

Indicates the learning rate optimization strategy to use.

Enums
LEARN_RATE_STRATEGY_UNSPECIFIED
CONSTANT Use a constant learning rate.

DistanceType

Distance metric used to compute the distance between two points.

Enums
DISTANCE_TYPE_UNSPECIFIED
EUCLIDEAN Eculidean distance.
COSINE Cosine distance.

OptimizationStrategy

Indicates the optimization strategy used for training.

Enums
OPTIMIZATION_STRATEGY_UNSPECIFIED
BATCH_GRADIENT_DESCENT Uses an iterative batch gradient descent algorithm.
NORMAL_EQUATION Uses a normal equation to solve linear regression problem.

FeedbackType

Indicates the training algorithm to use for matrix factorization models.

Enums
FEEDBACK_TYPE_UNSPECIFIED
IMPLICIT Use weighted-als for implicit feedback problems.
EXPLICIT Use nonweighted-als for explicit feedback problems.

KmeansInitializationMethod

Indicates the method used to initialize the centroids for KMeans clustering algorithm.

Enums
KMEANS_INITIALIZATION_METHOD_UNSPECIFIED Unspecified initialization method.
RANDOM Initializes the centroids randomly.
CUSTOM Initializes the centroids using data specified in kmeansInitializationColumn.
KMEANS_PLUS_PLUS Initializes with kmeans++.

ArimaOrder

Arima order, can be used for both non-seasonal and seasonal parts.

JSON representation 
{
  "p": string,
  "d": string,
  "q": string
}
Fields
p

string (int64 format)

Order of the autoregressive part.
d

string (int64 format)

Order of the differencing part.
q

string (int64 format)

Order of the moving-average part.

DataFrequency

Type of supported data frequency for time series forecasting models.

Enums
DATA_FREQUENCY_UNSPECIFIED
AUTO_FREQUENCY Automatically inferred from timestamps.
YEARLY Yearly data.
QUARTERLY Quarterly data.
MONTHLY Monthly data.
WEEKLY Weekly data.
DAILY Daily data.
HOURLY Hourly data.
PER_MINUTE Per-minute data.

HolidayRegion

Type of supported holiday regions for time series forecasting models.

Enums
HOLIDAY_REGION_UNSPECIFIED Holiday region unspecified.
GLOBAL Global.
NA North America.
JAPAC Japan and Asia Pacific: Korea, Greater China, India, Australia, and New Zealand.
EMEA Europe, the Middle East and Africa.
LAC Latin America and the Caribbean.
AE United Arab Emirates
AR Argentina
AT Austria
AU Australia
BE Belgium
BR Brazil
CA Canada
CH Switzerland
CL Chile
CN China
CO Colombia
CS Czechoslovakia
CZ Czech Republic
DE Germany
DK Denmark
DZ Algeria
EC Ecuador
EE Estonia
EG Egypt
ES Spain
FI Finland
FR France
GB Great Britain (United Kingdom)
GR Greece
HK Hong Kong
HU Hungary
ID Indonesia
IE Ireland
IL Israel
IN India
IR Iran
IT Italy
JP Japan
KR Korea (South)
LV Latvia
MA Morocco
MX Mexico
MY Malaysia
NG Nigeria
NL Netherlands
NO Norway
NZ New Zealand
PE Peru
PH Philippines
PK Pakistan
PL Poland
PT Portugal
RO Romania
RS Serbia
RU Russian Federation
SA Saudi Arabia
SE Sweden
SG Singapore
SI Slovenia
SK Slovakia
TH Thailand
TR Turkey
TW Taiwan
UA Ukraine
US United States
VE Venezuela
VN Viet Nam
ZA South Africa

IterationResult

Information about a single iteration of the training run.

JSON representation 
{
  "index": integer,
  "durationMs": string,
  "trainingLoss": number,
  "evalLoss": number,
  "learnRate": number,
  "clusterInfos": [
    {
      object (ClusterInfo)
    }
  ],
  "arimaResult": {
    object (ArimaResult)
  }
}
Fields
index

integer

Index of the iteration, 0 based.
durationMs

string (Int64Value format)

Time taken to run the iteration in milliseconds.
trainingLoss

number

Loss computed on the training data at the end of iteration.
evalLoss

number

Loss computed on the eval data at the end of iteration.
learnRate

number

Learn rate used for this iteration.
clusterInfos[]

object (ClusterInfo)

Information about top clusters for clustering models.
arimaResult

object (ArimaResult)

ClusterInfo

Information about a single cluster for clustering model.

JSON representation 
{
  "centroidId": string,
  "clusterRadius": number,
  "clusterSize": string
}
Fields
centroidId

string (int64 format)

Centroid id.
clusterRadius

number

Cluster radius, the average distance from centroid to each point assigned to the cluster.
clusterSize

string (Int64Value format)

Cluster size, the total number of points assigned to the cluster.

ArimaResult

(Auto-)arima fitting result. Wrap everything in ArimaResult for easier refactoring if we want to use model-specific iteration results.

JSON representation 
{
  "arimaModelInfo": [
    {
      object (ArimaModelInfo)
    }
  ],
  "seasonalPeriods": [
    enum (SeasonalPeriodType)
  ]
}
Fields
arimaModelInfo[]

object (ArimaModelInfo)

This message is repeated because there are multiple arima models fitted in auto-arima. For non-auto-arima model, its size is one.
seasonalPeriods[]

enum (SeasonalPeriodType)

Seasonal periods. Repeated because multiple periods are supported for one time series.

ArimaModelInfo

Arima model information.

JSON representation 
{
  "nonSeasonalOrder": {
    object (ArimaOrder)
  },
  "arimaCoefficients": {
    object (ArimaCoefficients)
  },
  "arimaFittingMetrics": {
    object (ArimaFittingMetrics)
  },
  "hasDrift": boolean,
  "timeSeriesId": string,
  "timeSeriesIds": [
    string
  ],
  "seasonalPeriods": [
    enum (SeasonalPeriodType)
  ],
  "hasHolidayEffect": boolean,
  "hasSpikesAndDips": boolean,
  "hasStepChanges": boolean
}
Fields
nonSeasonalOrder

object (ArimaOrder)

Non-seasonal order.
arimaCoefficients

object (ArimaCoefficients)

Arima coefficients.
arimaFittingMetrics

object (ArimaFittingMetrics)

Arima fitting metrics.
hasDrift

boolean

Whether Arima model fitted with drift or not. It is always false when d is not 1.
timeSeriesId

string

The timeSeriesId value for this time series. It will be one of the unique values from the timeSeriesIdColumn specified during ARIMA model training. Only present when timeSeriesIdColumn training option was used.
timeSeriesIds[]

string

The tuple of timeSeriesIds identifying this time series. It will be one of the unique tuples of values present in the timeSeriesIdColumns specified during ARIMA model training. Only present when timeSeriesIdColumns training option was used and the order of values here are same as the order of timeSeriesIdColumns.
seasonalPeriods[]

enum (SeasonalPeriodType)

Seasonal periods. Repeated because multiple periods are supported for one time series.
hasHolidayEffect

boolean

If true, holiday_effect is a part of time series decomposition result.
hasSpikesAndDips

boolean

If true, spikes_and_dips is a part of time series decomposition result.
hasStepChanges

boolean

If true, step_changes is a part of time series decomposition result.

ArimaCoefficients

Arima coefficients.

JSON representation 
{
  "autoRegressiveCoefficients": [
    number
  ],
  "movingAverageCoefficients": [
    number
  ],
  "interceptCoefficient": number
}
Fields
autoRegressiveCoefficients[]

number

Auto-regressive coefficients, an array of double.
movingAverageCoefficients[]

number

Moving-average coefficients, an array of double.
interceptCoefficient

number

Intercept coefficient, just a double not an array.

ArimaFittingMetrics

ARIMA model fitting metrics.

JSON representation 
{
  "logLikelihood": number,
  "aic": number,
  "variance": number
}
Fields
logLikelihood

number

Log-likelihood.
aic

number

AIC.
variance

number

Variance.

SeasonalPeriodType

Enums
SEASONAL_PERIOD_TYPE_UNSPECIFIED
NO_SEASONALITY No seasonality
DAILY Daily period, 24 hours.
WEEKLY Weekly period, 7 days.
MONTHLY Monthly period, 30 days or irregular.
QUARTERLY Quarterly period, 90 days or irregular.
YEARLY Yearly period, 365 days or irregular.

EvaluationMetrics

Evaluation metrics of a model. These are either computed on all training data or just the eval data based on whether eval data was used during training. These are not present for imported models.

JSON representation 
{

  // Union field metrics can be only one of the following:
  "regressionMetrics": {
    object (RegressionMetrics)
  },
  "binaryClassificationMetrics": {
    object (BinaryClassificationMetrics)
  },
  "multiClassClassificationMetrics": {
    object (MultiClassClassificationMetrics)
  },
  "clusteringMetrics": {
    object (ClusteringMetrics)
  },
  "rankingMetrics": {
    object (RankingMetrics)
  },
  "arimaForecastingMetrics": {
    object (ArimaForecastingMetrics)
  }
  // End of list of possible types for union field metrics.
}
Fields

Union field metrics.

metrics can be only one of the following:
regressionMetrics

object (RegressionMetrics)

Populated for regression models and explicit feedback type matrix factorization models.
binaryClassificationMetrics

object (BinaryClassificationMetrics)

Populated for binary classification/classifier models.
multiClassClassificationMetrics

object (MultiClassClassificationMetrics)

Populated for multi-class classification/classifier models.
clusteringMetrics

object (ClusteringMetrics)

Populated for clustering models.
rankingMetrics

object (RankingMetrics)

Populated for implicit feedback type matrix factorization models.
arimaForecastingMetrics

object (ArimaForecastingMetrics)

Populated for ARIMA models.

RegressionMetrics

Evaluation metrics for regression and explicit feedback type matrix factorization models.

JSON representation 
{
  "meanAbsoluteError": number,
  "meanSquaredError": number,
  "meanSquaredLogError": number,
  "medianAbsoluteError": number,
  "rSquared": number
}
Fields
meanAbsoluteError

number

Mean absolute error.
meanSquaredError

number

Mean squared error.
meanSquaredLogError

number

Mean squared log error.
medianAbsoluteError

number

Median absolute error.
rSquared

number

R^2 score. This corresponds to r2_score in ML.EVALUATE.

BinaryClassificationMetrics

Evaluation metrics for binary classification/classifier models.

JSON representation 
{
  "aggregateClassificationMetrics": {
    object (AggregateClassificationMetrics)
  },
  "binaryConfusionMatrixList": [
    {
      object (BinaryConfusionMatrix)
    }
  ],
  "positiveLabel": string,
  "negativeLabel": string
}
Fields
aggregateClassificationMetrics

object (AggregateClassificationMetrics)

Aggregate classification metrics.
binaryConfusionMatrixList[]

object (BinaryConfusionMatrix)

Binary confusion matrix at multiple thresholds.
positiveLabel

string

Label representing the positive class.
negativeLabel

string

Label representing the negative class.

AggregateClassificationMetrics

Aggregate metrics for classification/classifier models. For multi-class models, the metrics are either macro-averaged or micro-averaged. When macro-averaged, the metrics are calculated for each label and then an unweighted average is taken of those values. When micro-averaged, the metric is calculated globally by counting the total number of correctly predicted rows.

JSON representation 
{
  "precision": number,
  "recall": number,
  "accuracy": number,
  "threshold": number,
  "f1Score": number,
  "logLoss": number,
  "rocAuc": number
}
Fields
precision

number

Precision is the fraction of actual positive predictions that had positive actual labels. For multiclass this is a macro-averaged metric treating each class as a binary classifier.
recall

number

Recall is the fraction of actual positive labels that were given a positive prediction. For multiclass this is a macro-averaged metric.
accuracy

number

Accuracy is the fraction of predictions given the correct label. For multiclass this is a micro-averaged metric.
threshold

number

Threshold at which the metrics are computed. For binary classification models this is the positive class threshold. For multi-class classfication models this is the confidence threshold.
f1Score

number

The F1 score is an average of recall and precision. For multiclass this is a macro-averaged metric.
logLoss

number

Logarithmic Loss. For multiclass this is a macro-averaged metric.
rocAuc

number

Area Under a ROC Curve. For multiclass this is a macro-averaged metric.

BinaryConfusionMatrix

Confusion matrix for binary classification models.

JSON representation 
{
  "positiveClassThreshold": number,
  "truePositives": string,
  "falsePositives": string,
  "trueNegatives": string,
  "falseNegatives": string,
  "precision": number,
  "recall": number,
  "f1Score": number,
  "accuracy": number
}
Fields
positiveClassThreshold

number

Threshold value used when computing each of the following metric.
truePositives

string (Int64Value format)

Number of true samples predicted as true.
falsePositives

string (Int64Value format)

Number of false samples predicted as true.
trueNegatives

string (Int64Value format)

Number of true samples predicted as false.
falseNegatives

string (Int64Value format)

Number of false samples predicted as false.
precision

number

The fraction of actual positive predictions that had positive actual labels.
recall

number

The fraction of actual positive labels that were given a positive prediction.
f1Score

number

The equally weighted average of recall and precision.
accuracy

number

The fraction of predictions given the correct label.

MultiClassClassificationMetrics

Evaluation metrics for multi-class classification/classifier models.

JSON representation 
{
  "aggregateClassificationMetrics": {
    object (AggregateClassificationMetrics)
  },
  "confusionMatrixList": [
    {
      object (ConfusionMatrix)
    }
  ]
}
Fields
aggregateClassificationMetrics

object (AggregateClassificationMetrics)

Aggregate classification metrics.
confusionMatrixList[]

object (ConfusionMatrix)

Confusion matrix at different thresholds.

ConfusionMatrix

Confusion matrix for multi-class classification models.

JSON representation 
{
  "confidenceThreshold": number,
  "rows": [
    {
      object (Row)
    }
  ]
}
Fields
confidenceThreshold

number

Confidence threshold used when computing the entries of the confusion matrix.
rows[]

object (Row)

One row per actual label.

Row

A single row in the confusion matrix.

JSON representation 
{
  "actualLabel": string,
  "entries": [
    {
      object (Entry)
    }
  ]
}
Fields
actualLabel

string

The original label of this row.
entries[]

object (Entry)

Info describing predicted label distribution.

Entry

A single entry in the confusion matrix.

JSON representation 
{
  "predictedLabel": string,
  "itemCount": string
}
Fields
predictedLabel

string

The predicted label. For confidenceThreshold > 0, we will also add an entry indicating the number of items under the confidence threshold.
itemCount

string (Int64Value format)

Number of items being predicted as this label.

ClusteringMetrics

Evaluation metrics for clustering models.

JSON representation 
{
  "daviesBouldinIndex": number,
  "meanSquaredDistance": number,
  "clusters": [
    {
      object (Cluster)
    }
  ]
}
Fields
daviesBouldinIndex

number

Davies-Bouldin index.
meanSquaredDistance

number

Mean of squared distances between each sample to its cluster centroid.
clusters[]

object (Cluster)

Information for all clusters.

Cluster

Message containing the information about one cluster.

JSON representation 
{
  "centroidId": string,
  "featureValues": [
    {
      object (FeatureValue)
    }
  ],
  "count": string
}
Fields
centroidId

string (int64 format)

Centroid id.
featureValues[]

object (FeatureValue)

Values of highly variant features for this cluster.
count

string (Int64Value format)

Count of training data rows that were assigned to this cluster.

FeatureValue

Representative value of a single feature within the cluster.

JSON representation 
{
  "featureColumn": string,

  // Union field value can be only one of the following:
  "numericalValue": number,
  "categoricalValue": {
    object (CategoricalValue)
  }
  // End of list of possible types for union field value.
}
Fields
featureColumn

string

The feature column name.

Union field value.

value can be only one of the following:
numericalValue

number

The numerical feature value. This is the centroid value for this feature.
categoricalValue

object (CategoricalValue)

The categorical feature value.

CategoricalValue

Representative value of a categorical feature.

JSON representation 
{
  "categoryCounts": [
    {
      object (CategoryCount)
    }
  ]
}
Fields
categoryCounts[]

object (CategoryCount)

Counts of all categories for the categorical feature. If there are more than ten categories, we return top ten (by count) and return one more CategoryCount with category "_OTHER_" and count as aggregate counts of remaining categories.

CategoryCount

Represents the count of a single category within the cluster.

JSON representation 
{
  "category": string,
  "count": string
}
Fields
category

string

The name of category.
count

string (Int64Value format)

The count of training samples matching the category within the cluster.

RankingMetrics

Evaluation metrics used by weighted-ALS models specified by feedbackType=implicit.

JSON representation 
{
  "meanAveragePrecision": number,
  "meanSquaredError": number,
  "normalizedDiscountedCumulativeGain": number,
  "averageRank": number
}
Fields
meanAveragePrecision

number

Calculates a precision per user for all the items by ranking them and then averages all the precisions across all the users.
meanSquaredError

number

Similar to the mean squared error computed in regression and explicit recommendation models except instead of computing the rating directly, the output from evaluate is computed against a preference which is 1 or 0 depending on if the rating exists or not.
normalizedDiscountedCumulativeGain

number

A metric to determine the goodness of a ranking calculated from the predicted confidence by comparing it to an ideal rank measured by the original ratings.
averageRank

number

Determines the goodness of a ranking by computing the percentile rank from the predicted confidence and dividing it by the original rank.

ArimaForecastingMetrics

Model evaluation metrics for ARIMA forecasting models.

JSON representation 
{
  "nonSeasonalOrder": [
    {
      object (ArimaOrder)
    }
  ],
  "arimaFittingMetrics": [
    {
      object (ArimaFittingMetrics)
    }
  ],
  "seasonalPeriods": [
    enum (SeasonalPeriodType)
  ],
  "hasDrift": [
    boolean
  ],
  "timeSeriesId": [
    string
  ],
  "arimaSingleModelForecastingMetrics": [
    {
      object (ArimaSingleModelForecastingMetrics)
    }
  ]
}
Fields
nonSeasonalOrder[]
(deprecated)

object (ArimaOrder)

Non-seasonal order.
arimaFittingMetrics[]
(deprecated)

object (ArimaFittingMetrics)

Arima model fitting metrics.
seasonalPeriods[]
(deprecated)

enum (SeasonalPeriodType)

Seasonal periods. Repeated because multiple periods are supported for one time series.
hasDrift[]
(deprecated)

boolean

Whether Arima model fitted with drift or not. It is always false when d is not 1.
timeSeriesId[]
(deprecated)

string

Id to differentiate different time series for the large-scale case.
arimaSingleModelForecastingMetrics[]

object (ArimaSingleModelForecastingMetrics)

Repeated as there can be many metric sets (one for each model) in auto-arima and the large-scale case.

ArimaSingleModelForecastingMetrics

Model evaluation metrics for a single ARIMA forecasting model.

JSON representation 
{
  "nonSeasonalOrder": {
    object (ArimaOrder)
  },
  "arimaFittingMetrics": {
    object (ArimaFittingMetrics)
  },
  "hasDrift": boolean,
  "timeSeriesId": string,
  "timeSeriesIds": [
    string
  ],
  "seasonalPeriods": [
    enum (SeasonalPeriodType)
  ],
  "hasHolidayEffect": boolean,
  "hasSpikesAndDips": boolean,
  "hasStepChanges": boolean
}
Fields
nonSeasonalOrder

object (ArimaOrder)

Non-seasonal order.
arimaFittingMetrics

object (ArimaFittingMetrics)

Arima fitting metrics.
hasDrift

boolean

Is arima model fitted with drift or not. It is always false when d is not 1.
timeSeriesId

string

The timeSeriesId value for this time series. It will be one of the unique values from the timeSeriesIdColumn specified during ARIMA model training. Only present when timeSeriesIdColumn training option was used.
timeSeriesIds[]

string

The tuple of timeSeriesIds identifying this time series. It will be one of the unique tuples of values present in the timeSeriesIdColumns specified during ARIMA model training. Only present when timeSeriesIdColumns training option was used and the order of values here are same as the order of timeSeriesIdColumns.
seasonalPeriods[]

enum (SeasonalPeriodType)

Seasonal periods. Repeated because multiple periods are supported for one time series.
hasHolidayEffect

boolean

If true, holiday_effect is a part of time series decomposition result.
hasSpikesAndDips

boolean

If true, spikes_and_dips is a part of time series decomposition result.
hasStepChanges

boolean

If true, step_changes is a part of time series decomposition result.

DataSplitResult

Data split result. This contains references to the training and evaluation data tables that were used to train the model.

JSON representation 
{
  "trainingTable": {
    object (TableReference)
  },
  "evaluationTable": {
    object (TableReference)
  }
}
Fields
trainingTable

object (TableReference)

Table reference of the training data after split.
evaluationTable

object (TableReference)

Table reference of the evaluation data after split.

GlobalExplanation

Global explanations containing the top most important features after training.

JSON representation 
{
  "explanations": [
    {
      object (Explanation)
    }
  ],
  "classLabel": string
}
Fields
explanations[]

object (Explanation)

A list of the top global explanations. Sorted by absolute value of attribution in descending order.
classLabel

string

Class label for this set of global explanations. Will be empty/null for binary logistic and linear regression models. Sorted alphabetically in descending order.

Explanation

Explanation for a single feature.

JSON representation 
{
  "featureName": string,
  "attribution": number
}
Fields
featureName

string

Full name of the feature. For non-numerical features, will be formatted like .. Overall size of feature name will always be truncated to first 120 characters.
attribution

number

Attribution of feature.

Methods

delete

 Deletes the model specified by modelId from the dataset.

get

 Gets the specified model resource by model ID.

list

 Lists all models in the specified dataset.

patch

 Patch specific fields in the specified model.