java/src/com/android/textclassifier/TextClassificationConstants.java - platform/external/libtextclassifier - Git at Google

 /*
  * Copyright (C) 2017 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.textclassifier;

 import android.provider.DeviceConfig;
 import android.view.textclassifier.ConversationAction;
 import android.view.textclassifier.TextClassifier;

 import androidx.annotation.Nullable;

 import com.android.textclassifier.utils.IndentingPrintWriter;

 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;

 /**
  * TextClassifier specific settings.
  * <p>Currently, this class does not guarantee co-diverted flags are updated atomically.
  * <p>Example of setting the values for testing.
  *
  * <pre>
  * adb shell cmd device_config put textclassifier system_textclassifier_enabled true
  * </pre>
  *
  * @see android.provider.DeviceConfig#NAMESPACE_TEXTCLASSIFIER
  */
 // TODO: Rename to TextClassifierSettings.
 public final class TextClassificationConstants {
     private static final String DELIMITER = ":";

     /** Whether the user language profile feature is enabled. */
     private static final String USER_LANGUAGE_PROFILE_ENABLED = "user_language_profile_enabled";
     /** Max length of text that suggestSelection can accept. */
     private static final String SUGGEST_SELECTION_MAX_RANGE_LENGTH =
             "suggest_selection_max_range_length";
     /** Max length of text that classifyText can accept. */
     private static final String CLASSIFY_TEXT_MAX_RANGE_LENGTH = "classify_text_max_range_length";
     /** Max length of text that generateLinks can accept. */
     private static final String GENERATE_LINKS_MAX_TEXT_LENGTH = "generate_links_max_text_length";
     /** Sampling rate for generateLinks logging. */
     private static final String GENERATE_LINKS_LOG_SAMPLE_RATE = "generate_links_log_sample_rate";
     /**
      * Extra count that is added to some languages, e.g. system languages, when deducing the
      * frequent languages in {@link
      * com.android.textclassifier.ulp.LanguageProfileAnalyzer#getFrequentLanguages(int)}.
      */
     private static final String FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT =
             "frequent_languages_bootstrapping_count";

     /**
      * Default count for the language in the system settings while calculating {@code
      * LanguageProfileAnalyzer.getRecognizedLanguages()}
      */
     private static final String LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT =
             "language_proficiency_bootstrapping_count";

     /**
      * A colon(:) separated string that specifies the default entities types for generateLinks when
      * hint is not given.
      */
     private static final String ENTITY_LIST_DEFAULT = "entity_list_default";
     /**
      * A colon(:) separated string that specifies the default entities types for generateLinks when
      * the text is in a not editable UI widget.
      */
     private static final String ENTITY_LIST_NOT_EDITABLE = "entity_list_not_editable";
     /**
      * A colon(:) separated string that specifies the default entities types for generateLinks when
      * the text is in an editable UI widget.
      */
     private static final String ENTITY_LIST_EDITABLE = "entity_list_editable";
     /**
      * A colon(:) separated string that specifies the default action types for
      * suggestConversationActions when the suggestions are used in an app.
      */
     private static final String IN_APP_CONVERSATION_ACTION_TYPES_DEFAULT =
             "in_app_conversation_action_types_default";
     /**
      * A colon(:) separated string that specifies the default action types for
      * suggestConversationActions when the suggestions are used in a notification.
      */
     private static final String NOTIFICATION_CONVERSATION_ACTION_TYPES_DEFAULT =
             "notification_conversation_action_types_default";
     /** Threshold to accept a suggested language from LangID model. */
     private static final String LANG_ID_THRESHOLD_OVERRIDE = "lang_id_threshold_override";
     /** Whether to enable {@link com.android.textclassifier.intent.TemplateIntentFactory}. */
     private static final String TEMPLATE_INTENT_FACTORY_ENABLED = "template_intent_factory_enabled";
     /** Whether to enable "translate" action in classifyText. */
     private static final String TRANSLATE_IN_CLASSIFICATION_ENABLED =
             "translate_in_classification_enabled";
     /**
      * Whether to detect the languages of the text in request by using langId for the native model.
      */
     private static final String DETECT_LANGUAGES_FROM_TEXT_ENABLED =
             "detect_languages_from_text_enabled";
     /**
      * A colon(:) separated string that specifies the configuration to use when including
      * surrounding context text in language detection queries.
      *
      * <p>Format= minimumTextSize<int>:penalizeRatio<float>:textScoreRatio<float>
      *
      * <p>e.g. 20:1.0:0.4
      *
      * <p>Accept all text lengths with minimumTextSize=0
      *
      * <p>Reject all text less than minimumTextSize with penalizeRatio=0
      *
      * @see {@code TextClassifierImpl#detectLanguages(String, int, int)} for reference.
      */
     private static final String LANG_ID_CONTEXT_SETTINGS = "lang_id_context_settings";
     /** Default threshold to translate the language of the context the user selects */
     private static final String TRANSLATE_ACTION_THRESHOLD = "translate_action_threshold";

     // Sync this with ConversationAction.TYPE_ADD_CONTACT;
     public static final String TYPE_ADD_CONTACT = "add_contact";
     // Sync this with ConversationAction.COPY;
     public static final String TYPE_COPY = "copy";

     private static final int SUGGEST_SELECTION_MAX_RANGE_LENGTH_DEFAULT = 10 * 1000;
     private static final int CLASSIFY_TEXT_MAX_RANGE_LENGTH_DEFAULT = 10 * 1000;
     private static final int GENERATE_LINKS_MAX_TEXT_LENGTH_DEFAULT = 100 * 1000;
     private static final int GENERATE_LINKS_LOG_SAMPLE_RATE_DEFAULT = 100;
     private static final int FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT_DEFAULT = 100;
     private static final int LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT_DEFAULT = 100;

     private static final List<String> ENTITY_LIST_DEFAULT_VALUE =
             Arrays.asList(
                     TextClassifier.TYPE_ADDRESS,
                     TextClassifier.TYPE_EMAIL,
                     TextClassifier.TYPE_PHONE,
                     TextClassifier.TYPE_URL,
                     TextClassifier.TYPE_DATE,
                     TextClassifier.TYPE_DATE_TIME,
                     TextClassifier.TYPE_FLIGHT_NUMBER);
     private static final List<String> CONVERSATION_ACTIONS_TYPES_DEFAULT_VALUES =
             Arrays.asList(
                     ConversationAction.TYPE_TEXT_REPLY,
                     ConversationAction.TYPE_CREATE_REMINDER,
                     ConversationAction.TYPE_CALL_PHONE,
                     ConversationAction.TYPE_OPEN_URL,
                     ConversationAction.TYPE_SEND_EMAIL,
                     ConversationAction.TYPE_SEND_SMS,
                     ConversationAction.TYPE_TRACK_FLIGHT,
                     ConversationAction.TYPE_VIEW_CALENDAR,
                     ConversationAction.TYPE_VIEW_MAP,
                     TYPE_ADD_CONTACT,
                     TYPE_COPY);
     /**
      * < 0 : Not set. Use value from LangId model. 0 - 1: Override value in LangId model.
      *
      * @see EntityConfidence
      */
     private static final float LANG_ID_THRESHOLD_OVERRIDE_DEFAULT = -1f;

     private static final float TRANSLATE_ACTION_THRESHOLD_DEFAULT = 0.5f;

     private static final boolean USER_LANGUAGE_PROFILE_ENABLED_DEFAULT = true;
     private static final boolean TEMPLATE_INTENT_FACTORY_ENABLED_DEFAULT = true;
     private static final boolean TRANSLATE_IN_CLASSIFICATION_ENABLED_DEFAULT = true;
     private static final boolean DETECT_LANGUAGES_FROM_TEXT_ENABLED_DEFAULT = true;
     private static final float[] LANG_ID_CONTEXT_SETTINGS_DEFAULT = new float[] {20f, 1.0f, 0.4f};

     public int getSuggestSelectionMaxRangeLength() {
         return DeviceConfig.getInt(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 SUGGEST_SELECTION_MAX_RANGE_LENGTH,
                 SUGGEST_SELECTION_MAX_RANGE_LENGTH_DEFAULT);
     }

     public int getClassifyTextMaxRangeLength() {
         return DeviceConfig.getInt(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 CLASSIFY_TEXT_MAX_RANGE_LENGTH,
                 CLASSIFY_TEXT_MAX_RANGE_LENGTH_DEFAULT);
     }

     public int getGenerateLinksMaxTextLength() {
         return DeviceConfig.getInt(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 GENERATE_LINKS_MAX_TEXT_LENGTH,
                 GENERATE_LINKS_MAX_TEXT_LENGTH_DEFAULT);
     }

     public int getGenerateLinksLogSampleRate() {
         return DeviceConfig.getInt(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 GENERATE_LINKS_LOG_SAMPLE_RATE,
                 GENERATE_LINKS_LOG_SAMPLE_RATE_DEFAULT);
     }

     public int getFrequentLanguagesBootstrappingCount() {
         return DeviceConfig.getInt(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT,
                 FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT_DEFAULT);
     }

     public int getLanguageProficiencyBootstrappingCount() {
         return DeviceConfig.getInt(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT,
                 LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT_DEFAULT);
     }

     public List<String> getEntityListDefault() {
         return getDeviceConfigStringList(ENTITY_LIST_DEFAULT, ENTITY_LIST_DEFAULT_VALUE);
     }

     public List<String> getEntityListNotEditable() {
         return getDeviceConfigStringList(ENTITY_LIST_NOT_EDITABLE, ENTITY_LIST_DEFAULT_VALUE);
     }

     public List<String> getEntityListEditable() {
         return getDeviceConfigStringList(ENTITY_LIST_EDITABLE, ENTITY_LIST_DEFAULT_VALUE);
     }

     public List<String> getInAppConversationActionTypes() {
         return getDeviceConfigStringList(
                 IN_APP_CONVERSATION_ACTION_TYPES_DEFAULT,
                 CONVERSATION_ACTIONS_TYPES_DEFAULT_VALUES);
     }

     public List<String> getNotificationConversationActionTypes() {
         return getDeviceConfigStringList(
                 NOTIFICATION_CONVERSATION_ACTION_TYPES_DEFAULT,
                 CONVERSATION_ACTIONS_TYPES_DEFAULT_VALUES);
     }

     public float getLangIdThresholdOverride() {
         return DeviceConfig.getFloat(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 LANG_ID_THRESHOLD_OVERRIDE,
                 LANG_ID_THRESHOLD_OVERRIDE_DEFAULT);
     }

     public float getTranslateActionThreshold() {
         return DeviceConfig.getFloat(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 TRANSLATE_ACTION_THRESHOLD,
                 TRANSLATE_ACTION_THRESHOLD_DEFAULT);
     }

     public boolean isUserLanguageProfileEnabled() {
         return DeviceConfig.getBoolean(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 USER_LANGUAGE_PROFILE_ENABLED,
                 USER_LANGUAGE_PROFILE_ENABLED_DEFAULT);
     }

     public boolean isTemplateIntentFactoryEnabled() {
         return DeviceConfig.getBoolean(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 TEMPLATE_INTENT_FACTORY_ENABLED,
                 TEMPLATE_INTENT_FACTORY_ENABLED_DEFAULT);
     }

     public boolean isTranslateInClassificationEnabled() {
         return DeviceConfig.getBoolean(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 TRANSLATE_IN_CLASSIFICATION_ENABLED,
                 TRANSLATE_IN_CLASSIFICATION_ENABLED_DEFAULT);
     }

     public boolean isDetectLanguagesFromTextEnabled() {
         return DeviceConfig.getBoolean(
                 DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
                 DETECT_LANGUAGES_FROM_TEXT_ENABLED,
                 DETECT_LANGUAGES_FROM_TEXT_ENABLED_DEFAULT);
     }

     public float[] getLangIdContextSettings() {
         return getDeviceConfigFloatArray(
                 LANG_ID_CONTEXT_SETTINGS, LANG_ID_CONTEXT_SETTINGS_DEFAULT);
     }

     void dump(IndentingPrintWriter pw) {
         pw.println("TextClassificationConstants:");
         pw.increaseIndent();
         pw.printPair("classify_text_max_range_length", getClassifyTextMaxRangeLength());
         pw.printPair("detect_language_from_text_enabled", isDetectLanguagesFromTextEnabled());
         pw.printPair("entity_list_default", getEntityListDefault());
         pw.printPair("entity_list_editable", getEntityListEditable());
         pw.printPair("entity_list_not_editable", getEntityListNotEditable());
         pw.printPair("generate_links_log_sample_rate", getGenerateLinksLogSampleRate());
         pw.printPair(
                 "frequent_languages_bootstrapping_count", getFrequentLanguagesBootstrappingCount());
         pw.printPair("generate_links_max_text_length", getGenerateLinksMaxTextLength());
         pw.printPair("in_app_conversation_action_types_default", getInAppConversationActionTypes());
         pw.printPair("lang_id_context_settings", Arrays.toString(getLangIdContextSettings()));
         pw.printPair("lang_id_threshold_override", getLangIdThresholdOverride());
         pw.printPair("translate_action_threshold", getTranslateActionThreshold());
         pw.printPair(
                 "notification_conversation_action_types_default",
                 getNotificationConversationActionTypes());
         pw.printPair("suggest_selection_max_range_length", getSuggestSelectionMaxRangeLength());
         pw.printPair("user_language_profile_enabled", isUserLanguageProfileEnabled());
         pw.printPair("template_intent_factory_enabled", isTemplateIntentFactoryEnabled());
         pw.printPair("translate_in_classification_enabled", isTranslateInClassificationEnabled());
         pw.printPair(
                 "language proficiency bootstrapping count",
                 getLanguageProficiencyBootstrappingCount());
         pw.decreaseIndent();
     }

     private static List<String> getDeviceConfigStringList(String key, List<String> defaultValue) {
         return parse(
                 DeviceConfig.getString(DeviceConfig.NAMESPACE_TEXTCLASSIFIER, key, null),
                 defaultValue);
     }

     private static float[] getDeviceConfigFloatArray(String key, float[] defaultValue) {
         return parse(
                 DeviceConfig.getString(DeviceConfig.NAMESPACE_TEXTCLASSIFIER, key, null),
                 defaultValue);
     }

     private static List<String> parse(@Nullable String listStr, List<String> defaultValue) {
         if (listStr != null) {
             return Collections.unmodifiableList(Arrays.asList(listStr.split(DELIMITER)));
         }
         return defaultValue;
     }

     private static float[] parse(@Nullable String arrayStr, float[] defaultValue) {
         if (arrayStr != null) {
             final String[] split = arrayStr.split(DELIMITER);
             if (split.length != defaultValue.length) {
                 return defaultValue;
             }
             final float[] result = new float[split.length];
             for (int i = 0; i < split.length; i++) {
                 try {
                     result[i] = Float.parseFloat(split[i]);
                 } catch (NumberFormatException e) {
                     return defaultValue;
                 }
             }
             return result;
         } else {
             return defaultValue;
         }
     }
 }
	/*
	* Copyright (C) 2017 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.textclassifier;

	import android.provider.DeviceConfig;
	import android.view.textclassifier.ConversationAction;
	import android.view.textclassifier.TextClassifier;

	import androidx.annotation.Nullable;

	import com.android.textclassifier.utils.IndentingPrintWriter;

	import java.util.Arrays;
	import java.util.Collections;
	import java.util.List;

	/**
	* TextClassifier specific settings.
	* <p>Currently, this class does not guarantee co-diverted flags are updated atomically.
	* <p>Example of setting the values for testing.
	*
	* <pre>
	* adb shell cmd device_config put textclassifier system_textclassifier_enabled true
	* </pre>
	*
	* @see android.provider.DeviceConfig#NAMESPACE_TEXTCLASSIFIER
	*/
	// TODO: Rename to TextClassifierSettings.
	public final class TextClassificationConstants {
	private static final String DELIMITER = ":";

	/** Whether the user language profile feature is enabled. */
	private static final String USER_LANGUAGE_PROFILE_ENABLED = "user_language_profile_enabled";
	/** Max length of text that suggestSelection can accept. */
	private static final String SUGGEST_SELECTION_MAX_RANGE_LENGTH =
	"suggest_selection_max_range_length";
	/** Max length of text that classifyText can accept. */
	private static final String CLASSIFY_TEXT_MAX_RANGE_LENGTH = "classify_text_max_range_length";
	/** Max length of text that generateLinks can accept. */
	private static final String GENERATE_LINKS_MAX_TEXT_LENGTH = "generate_links_max_text_length";
	/** Sampling rate for generateLinks logging. */
	private static final String GENERATE_LINKS_LOG_SAMPLE_RATE = "generate_links_log_sample_rate";
	/**
	* Extra count that is added to some languages, e.g. system languages, when deducing the
	* frequent languages in {@link
	* com.android.textclassifier.ulp.LanguageProfileAnalyzer#getFrequentLanguages(int)}.
	*/
	private static final String FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT =
	"frequent_languages_bootstrapping_count";

	/**
	* Default count for the language in the system settings while calculating {@code
	* LanguageProfileAnalyzer.getRecognizedLanguages()}
	*/
	private static final String LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT =
	"language_proficiency_bootstrapping_count";

	/**
	* A colon(:) separated string that specifies the default entities types for generateLinks when
	* hint is not given.
	*/
	private static final String ENTITY_LIST_DEFAULT = "entity_list_default";
	/**
	* A colon(:) separated string that specifies the default entities types for generateLinks when
	* the text is in a not editable UI widget.
	*/
	private static final String ENTITY_LIST_NOT_EDITABLE = "entity_list_not_editable";
	/**
	* A colon(:) separated string that specifies the default entities types for generateLinks when
	* the text is in an editable UI widget.
	*/
	private static final String ENTITY_LIST_EDITABLE = "entity_list_editable";
	/**
	* A colon(:) separated string that specifies the default action types for
	* suggestConversationActions when the suggestions are used in an app.
	*/
	private static final String IN_APP_CONVERSATION_ACTION_TYPES_DEFAULT =
	"in_app_conversation_action_types_default";
	/**
	* A colon(:) separated string that specifies the default action types for
	* suggestConversationActions when the suggestions are used in a notification.
	*/
	private static final String NOTIFICATION_CONVERSATION_ACTION_TYPES_DEFAULT =
	"notification_conversation_action_types_default";
	/** Threshold to accept a suggested language from LangID model. */
	private static final String LANG_ID_THRESHOLD_OVERRIDE = "lang_id_threshold_override";
	/** Whether to enable {@link com.android.textclassifier.intent.TemplateIntentFactory}. */
	private static final String TEMPLATE_INTENT_FACTORY_ENABLED = "template_intent_factory_enabled";
	/** Whether to enable "translate" action in classifyText. */
	private static final String TRANSLATE_IN_CLASSIFICATION_ENABLED =
	"translate_in_classification_enabled";
	/**
	* Whether to detect the languages of the text in request by using langId for the native model.
	*/
	private static final String DETECT_LANGUAGES_FROM_TEXT_ENABLED =
	"detect_languages_from_text_enabled";
	/**
	* A colon(:) separated string that specifies the configuration to use when including
	* surrounding context text in language detection queries.
	*
	* <p>Format= minimumTextSize<int>:penalizeRatio<float>:textScoreRatio<float>
	*
	* <p>e.g. 20:1.0:0.4
	*
	* <p>Accept all text lengths with minimumTextSize=0
	*
	* <p>Reject all text less than minimumTextSize with penalizeRatio=0
	*
	* @see {@code TextClassifierImpl#detectLanguages(String, int, int)} for reference.
	*/
	private static final String LANG_ID_CONTEXT_SETTINGS = "lang_id_context_settings";
	/** Default threshold to translate the language of the context the user selects */
	private static final String TRANSLATE_ACTION_THRESHOLD = "translate_action_threshold";

	// Sync this with ConversationAction.TYPE_ADD_CONTACT;
	public static final String TYPE_ADD_CONTACT = "add_contact";
	// Sync this with ConversationAction.COPY;
	public static final String TYPE_COPY = "copy";

	private static final int SUGGEST_SELECTION_MAX_RANGE_LENGTH_DEFAULT = 10 * 1000;
	private static final int CLASSIFY_TEXT_MAX_RANGE_LENGTH_DEFAULT = 10 * 1000;
	private static final int GENERATE_LINKS_MAX_TEXT_LENGTH_DEFAULT = 100 * 1000;
	private static final int GENERATE_LINKS_LOG_SAMPLE_RATE_DEFAULT = 100;
	private static final int FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT_DEFAULT = 100;
	private static final int LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT_DEFAULT = 100;

	private static final List<String> ENTITY_LIST_DEFAULT_VALUE =
	Arrays.asList(
	TextClassifier.TYPE_ADDRESS,
	TextClassifier.TYPE_EMAIL,
	TextClassifier.TYPE_PHONE,
	TextClassifier.TYPE_URL,
	TextClassifier.TYPE_DATE,
	TextClassifier.TYPE_DATE_TIME,
	TextClassifier.TYPE_FLIGHT_NUMBER);
	private static final List<String> CONVERSATION_ACTIONS_TYPES_DEFAULT_VALUES =
	Arrays.asList(
	ConversationAction.TYPE_TEXT_REPLY,
	ConversationAction.TYPE_CREATE_REMINDER,
	ConversationAction.TYPE_CALL_PHONE,
	ConversationAction.TYPE_OPEN_URL,
	ConversationAction.TYPE_SEND_EMAIL,
	ConversationAction.TYPE_SEND_SMS,
	ConversationAction.TYPE_TRACK_FLIGHT,
	ConversationAction.TYPE_VIEW_CALENDAR,
	ConversationAction.TYPE_VIEW_MAP,
	TYPE_ADD_CONTACT,
	TYPE_COPY);
	/**
	* < 0 : Not set. Use value from LangId model. 0 - 1: Override value in LangId model.
	*
	* @see EntityConfidence
	*/
	private static final float LANG_ID_THRESHOLD_OVERRIDE_DEFAULT = -1f;

	private static final float TRANSLATE_ACTION_THRESHOLD_DEFAULT = 0.5f;

	private static final boolean USER_LANGUAGE_PROFILE_ENABLED_DEFAULT = true;
	private static final boolean TEMPLATE_INTENT_FACTORY_ENABLED_DEFAULT = true;
	private static final boolean TRANSLATE_IN_CLASSIFICATION_ENABLED_DEFAULT = true;
	private static final boolean DETECT_LANGUAGES_FROM_TEXT_ENABLED_DEFAULT = true;
	private static final float[] LANG_ID_CONTEXT_SETTINGS_DEFAULT = new float[] {20f, 1.0f, 0.4f};

	public int getSuggestSelectionMaxRangeLength() {
	return DeviceConfig.getInt(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	SUGGEST_SELECTION_MAX_RANGE_LENGTH,
	SUGGEST_SELECTION_MAX_RANGE_LENGTH_DEFAULT);
	}

	public int getClassifyTextMaxRangeLength() {
	return DeviceConfig.getInt(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	CLASSIFY_TEXT_MAX_RANGE_LENGTH,
	CLASSIFY_TEXT_MAX_RANGE_LENGTH_DEFAULT);
	}

	public int getGenerateLinksMaxTextLength() {
	return DeviceConfig.getInt(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	GENERATE_LINKS_MAX_TEXT_LENGTH,
	GENERATE_LINKS_MAX_TEXT_LENGTH_DEFAULT);
	}

	public int getGenerateLinksLogSampleRate() {
	return DeviceConfig.getInt(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	GENERATE_LINKS_LOG_SAMPLE_RATE,
	GENERATE_LINKS_LOG_SAMPLE_RATE_DEFAULT);
	}

	public int getFrequentLanguagesBootstrappingCount() {
	return DeviceConfig.getInt(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT,
	FREQUENT_LANGUAGES_BOOTSTRAPPING_COUNT_DEFAULT);
	}

	public int getLanguageProficiencyBootstrappingCount() {
	return DeviceConfig.getInt(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT,
	LANGUAGE_PROFICIENCY_BOOTSTRAPPING_COUNT_DEFAULT);
	}

	public List<String> getEntityListDefault() {
	return getDeviceConfigStringList(ENTITY_LIST_DEFAULT, ENTITY_LIST_DEFAULT_VALUE);
	}

	public List<String> getEntityListNotEditable() {
	return getDeviceConfigStringList(ENTITY_LIST_NOT_EDITABLE, ENTITY_LIST_DEFAULT_VALUE);
	}

	public List<String> getEntityListEditable() {
	return getDeviceConfigStringList(ENTITY_LIST_EDITABLE, ENTITY_LIST_DEFAULT_VALUE);
	}

	public List<String> getInAppConversationActionTypes() {
	return getDeviceConfigStringList(
	IN_APP_CONVERSATION_ACTION_TYPES_DEFAULT,
	CONVERSATION_ACTIONS_TYPES_DEFAULT_VALUES);
	}

	public List<String> getNotificationConversationActionTypes() {
	return getDeviceConfigStringList(
	NOTIFICATION_CONVERSATION_ACTION_TYPES_DEFAULT,
	CONVERSATION_ACTIONS_TYPES_DEFAULT_VALUES);
	}

	public float getLangIdThresholdOverride() {
	return DeviceConfig.getFloat(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	LANG_ID_THRESHOLD_OVERRIDE,
	LANG_ID_THRESHOLD_OVERRIDE_DEFAULT);
	}

	public float getTranslateActionThreshold() {
	return DeviceConfig.getFloat(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	TRANSLATE_ACTION_THRESHOLD,
	TRANSLATE_ACTION_THRESHOLD_DEFAULT);
	}

	public boolean isUserLanguageProfileEnabled() {
	return DeviceConfig.getBoolean(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	USER_LANGUAGE_PROFILE_ENABLED,
	USER_LANGUAGE_PROFILE_ENABLED_DEFAULT);
	}

	public boolean isTemplateIntentFactoryEnabled() {
	return DeviceConfig.getBoolean(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	TEMPLATE_INTENT_FACTORY_ENABLED,
	TEMPLATE_INTENT_FACTORY_ENABLED_DEFAULT);
	}

	public boolean isTranslateInClassificationEnabled() {
	return DeviceConfig.getBoolean(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	TRANSLATE_IN_CLASSIFICATION_ENABLED,
	TRANSLATE_IN_CLASSIFICATION_ENABLED_DEFAULT);
	}

	public boolean isDetectLanguagesFromTextEnabled() {
	return DeviceConfig.getBoolean(
	DeviceConfig.NAMESPACE_TEXTCLASSIFIER,
	DETECT_LANGUAGES_FROM_TEXT_ENABLED,
	DETECT_LANGUAGES_FROM_TEXT_ENABLED_DEFAULT);
	}

	public float[] getLangIdContextSettings() {
	return getDeviceConfigFloatArray(
	LANG_ID_CONTEXT_SETTINGS, LANG_ID_CONTEXT_SETTINGS_DEFAULT);
	}

	void dump(IndentingPrintWriter pw) {
	pw.println("TextClassificationConstants:");
	pw.increaseIndent();
	pw.printPair("classify_text_max_range_length", getClassifyTextMaxRangeLength());
	pw.printPair("detect_language_from_text_enabled", isDetectLanguagesFromTextEnabled());
	pw.printPair("entity_list_default", getEntityListDefault());
	pw.printPair("entity_list_editable", getEntityListEditable());
	pw.printPair("entity_list_not_editable", getEntityListNotEditable());
	pw.printPair("generate_links_log_sample_rate", getGenerateLinksLogSampleRate());
	pw.printPair(
	"frequent_languages_bootstrapping_count", getFrequentLanguagesBootstrappingCount());
	pw.printPair("generate_links_max_text_length", getGenerateLinksMaxTextLength());
	pw.printPair("in_app_conversation_action_types_default", getInAppConversationActionTypes());
	pw.printPair("lang_id_context_settings", Arrays.toString(getLangIdContextSettings()));
	pw.printPair("lang_id_threshold_override", getLangIdThresholdOverride());
	pw.printPair("translate_action_threshold", getTranslateActionThreshold());
	pw.printPair(
	"notification_conversation_action_types_default",
	getNotificationConversationActionTypes());
	pw.printPair("suggest_selection_max_range_length", getSuggestSelectionMaxRangeLength());
	pw.printPair("user_language_profile_enabled", isUserLanguageProfileEnabled());
	pw.printPair("template_intent_factory_enabled", isTemplateIntentFactoryEnabled());
	pw.printPair("translate_in_classification_enabled", isTranslateInClassificationEnabled());
	pw.printPair(
	"language proficiency bootstrapping count",
	getLanguageProficiencyBootstrappingCount());
	pw.decreaseIndent();
	}

	private static List<String> getDeviceConfigStringList(String key, List<String> defaultValue) {
	return parse(
	DeviceConfig.getString(DeviceConfig.NAMESPACE_TEXTCLASSIFIER, key, null),
	defaultValue);
	}

	private static float[] getDeviceConfigFloatArray(String key, float[] defaultValue) {
	return parse(
	DeviceConfig.getString(DeviceConfig.NAMESPACE_TEXTCLASSIFIER, key, null),
	defaultValue);
	}

	private static List<String> parse(@Nullable String listStr, List<String> defaultValue) {
	if (listStr != null) {
	return Collections.unmodifiableList(Arrays.asList(listStr.split(DELIMITER)));
	}
	return defaultValue;
	}

	private static float[] parse(@Nullable String arrayStr, float[] defaultValue) {
	if (arrayStr != null) {
	final String[] split = arrayStr.split(DELIMITER);
	if (split.length != defaultValue.length) {
	return defaultValue;
	}
	final float[] result = new float[split.length];
	for (int i = 0; i < split.length; i++) {
	try {
	result[i] = Float.parseFloat(split[i]);
	} catch (NumberFormatException e) {
	return defaultValue;
	}
	}
	return result;
	} else {
	return defaultValue;
	}
	}
	}