This file is indexed.

/etc/presage.xml is in libpresage-data 0.9.1-1.1ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<Presage>
    <PredictorRegistry>
        <LOGGER>ERROR</LOGGER>
        <!-- PREDICTORS
	     Space separated list of predictors to use to generate predictions
        -->
        <PREDICTORS>DefaultAbbreviationExpansionPredictor DefaultSmoothedNgramPredictor UserSmoothedNgramPredictor DefaultRecencyPredictor</PREDICTORS>
    </PredictorRegistry>
    <ContextTracker>
        <LOGGER>ERROR</LOGGER>
        <!-- SLIDING_WINDOW_SIZE
	     Size of buffer used by context tracker to detect context changes
        -->
        <SLIDING_WINDOW_SIZE>80</SLIDING_WINDOW_SIZE>
        <!-- LOWERCASE_MODE
	     Instruct context tracker to track text as lowercase
        -->
	<LOWERCASE_MODE>yes</LOWERCASE_MODE>
	<!-- ONLINE_LEARNING
	     Controls presage online machine learning feature.
	     Presage is context-aware and capable of dynamic online learning.
	     Setting this to yes/true will enable online learning mode.
	     Setting this to no/false will disable online learning mode.

             When online learning mode is disabled, it is still
             possible to instruct presage to learn through its API.
	-->
	<ONLINE_LEARNING>yes</ONLINE_LEARNING>
    </ContextTracker>
    <Selector>
        <LOGGER>ERROR</LOGGER>
        <!-- SUGGESTIONS
	     Controls how many suggestions are returned in each prediction.
        -->
        <SUGGESTIONS>6</SUGGESTIONS>
        <!-- REPEAT_SUGGESTIONS
	     Allow the same suggestion to be offered in subsequent
	     predictions, even if no context change has been detected.
        -->
        <REPEAT_SUGGESTIONS>no</REPEAT_SUGGESTIONS>
        <!-- GREEDY_SUGGESTION_THRESHOLD
	     Select only tokens whose completion length is greater than
	     the specified greedy suggestion threshold.
	     i.e. If this option is set to 2 and the current prefix is
               "cu", then the word "cub" will not offered as a
               suggestion, because the completion's length is only one
               character long. Tokens "curb" or "cube" or "cubicle" or
               "cucumber" will however be offered, because these
               words' completions are at least 2 characters long.
        -->
        <GREEDY_SUGGESTION_THRESHOLD>0</GREEDY_SUGGESTION_THRESHOLD>
    </Selector>
    <PredictorActivator>
        <LOGGER>ERROR</LOGGER>
        <!-- PREDICT_TIME
	     Maximum time allowed for predictors to return their prediction.
        -->
        <PREDICT_TIME>1000</PREDICT_TIME>
        <!-- MAX_PARTIAL_PREDICTION_SIZE
	     Desired size of each prediction prior to combination phase.
        -->
        <MAX_PARTIAL_PREDICTION_SIZE>60</MAX_PARTIAL_PREDICTION_SIZE>
        <!-- COMBINATION_POLICY
	     policy used by predictor to combine predictions returned
	     by the active predictors into one prediction.
        -->
        <COMBINATION_POLICY>Meritocracy</COMBINATION_POLICY>
    </PredictorActivator>
    <ProfileManager>
        <LOGGER>ERROR</LOGGER>
        <!-- AUTOPERSIST
             Automatically saves configuration to active profile.
          -->
        <AUTOPERSIST>false</AUTOPERSIST>
    </ProfileManager>
    <Predictors>
        <DefaultSmoothedNgramPredictor>
            <PREDICTOR>SmoothedNgramPredictor</PREDICTOR>
            <LOGGER>ERROR</LOGGER>
            <DBFILENAME>/usr/share/presage/database_en.db</DBFILENAME>
            <!-- delta_0, delta_1, ..., delta_{n-1}
		 Deltas also control the value of n in the n-gram model.
	    -->
            <DELTAS>0.01 0.1 0.89</DELTAS>
            <LEARN>false</LEARN>
            <DatabaseConnector>
                <LOGGER>ERROR</LOGGER>
            </DatabaseConnector>
        </DefaultSmoothedNgramPredictor>
        <UserSmoothedNgramPredictor>
            <PREDICTOR>SmoothedNgramPredictor</PREDICTOR>
            <LOGGER>ERROR</LOGGER>
	    <!-- ${HOME} is special. It expands to:
	          - $HOME on Unix
                  - %USERPROFILE% on Windows
	      -->
            <DBFILENAME>${HOME}/.presage/lm.db</DBFILENAME>
            <!-- delta_0, delta_1, ..., delta_{n-1}
		 Deltas also control the value of n in the n-gram model.
	    -->
            <DELTAS>0.01 0.1 0.89</DELTAS>
            <LEARN>true</LEARN>
            <DatabaseConnector>
                <LOGGER>ERROR</LOGGER>
            </DatabaseConnector>
        </UserSmoothedNgramPredictor>
        <DefaultRecencyPredictor>
            <PREDICTOR>RecencyPredictor</PREDICTOR>
            <LOGGER>ERROR</LOGGER>
            <LAMBDA>1</LAMBDA>
            <N_0>1</N_0>
            <CUTOFF_THRESHOLD>20</CUTOFF_THRESHOLD>
        </DefaultRecencyPredictor>
        <DefaultDictionaryPredictor>
            <PREDICTOR>DictionaryPredictor</PREDICTOR>
            <LOGGER>ERROR</LOGGER>
            <DICTIONARY>/usr/share/dict/words</DICTIONARY>
            <!-- fixed probability assigned to prediction -->
            <PROBABILITY>0.000001</PROBABILITY>
        </DefaultDictionaryPredictor>
        <DefaultAbbreviationExpansionPredictor>
            <PREDICTOR>AbbreviationExpansionPredictor</PREDICTOR>
            <LOGGER>ERROR</LOGGER>
            <ABBREVIATIONS>/usr/share/presage/abbreviations_en.txt</ABBREVIATIONS>
        </DefaultAbbreviationExpansionPredictor>
        <DefaultDejavuPredictor>
            <PREDICTOR>DejavuPredictor</PREDICTOR>
            <LOGGER>ERROR</LOGGER>
            <MEMORY>/usr/share/presage/dejavu_memory_en.txt</MEMORY>
            <TRIGGER>3</TRIGGER>
        </DefaultDejavuPredictor>
        <DefaultARPAPredictor>
            <PREDICTOR>ARPAPredictor</PREDICTOR>
            <LOGGER>ERROR</LOGGER>
            <ARPAFILENAME>/usr/share/presage/arpa_en.arpa</ARPAFILENAME>
            <VOCABFILENAME>/usr/share/presage/arpa_en.vocab</VOCABFILENAME>
            <TIMEOUT>100</TIMEOUT>
        </DefaultARPAPredictor>
    </Predictors>
</Presage>