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diff --git a/native/jni/src/proximity_info_params.h b/native/jni/src/proximity_info_params.h
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+++ b/native/jni/src/proximity_info_params.h
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+/*
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef LATINIME_PROXIMITY_INFO_PARAMS_H
+#define LATINIME_PROXIMITY_INFO_PARAMS_H
+
+#include "defines.h"
+
+namespace latinime {
+
+class ProximityInfoParams {
+ public:
+    static const float NOT_A_DISTANCE_FLOAT;
+    static const int MIN_DOUBLE_LETTER_BEELINE_SPEED_PERCENTILE;
+    static const float VERTICAL_SWEET_SPOT_SCALE_G;
+
+    // Used by ProximityInfoStateUtils::initGeometricDistanceInfos()
+    static const float NEAR_KEY_NORMALIZED_SQUARED_THRESHOLD;
+
+    // Used by ProximityInfoStateUtils::updateNearKeysDistances()
+    static const float NEAR_KEY_THRESHOLD_FOR_DISTANCE;
+
+    // Used by ProximityInfoStateUtils::isPrevLocalMin()
+    static const float MARGIN_FOR_PREV_LOCAL_MIN;
+
+    // Used by ProximityInfoStateUtils::getPointScore()
+    static const int DISTANCE_BASE_SCALE;
+    static const float NEAR_KEY_THRESHOLD_FOR_POINT_SCORE;
+    static const int CORNER_CHECK_DISTANCE_THRESHOLD_SCALE;
+    static const float NOT_LOCALMIN_DISTANCE_SCORE;
+    static const float LOCALMIN_DISTANCE_AND_NEAR_TO_KEY_SCORE;
+    static const float CORNER_ANGLE_THRESHOLD_FOR_POINT_SCORE;
+    static const float CORNER_SUM_ANGLE_THRESHOLD;
+    static const float CORNER_SCORE;
+
+    // Used by ProximityInfoStateUtils::refreshSpeedRates()
+    static const int NUM_POINTS_FOR_SPEED_CALCULATION;
+
+    // Used by ProximityInfoStateUtils::pushTouchPoint()
+    static const int LAST_POINT_SKIP_DISTANCE_SCALE;
+
+    // Used by ProximityInfoStateUtils::updateAlignPointProbabilities()
+    static const float MIN_PROBABILITY;
+    static const float MAX_SKIP_PROBABILITY;
+    static const float SKIP_FIRST_POINT_PROBABILITY;
+    static const float SKIP_LAST_POINT_PROBABILITY;
+    static const float MIN_SPEED_RATE_FOR_SKIP_PROBABILITY;
+    static const float SPEED_WEIGHT_FOR_SKIP_PROBABILITY;
+    static const float SLOW_STRAIGHT_WEIGHT_FOR_SKIP_PROBABILITY;
+    static const float NEAREST_DISTANCE_WEIGHT;
+    static const float NEAREST_DISTANCE_BIAS;
+    static const float NEAREST_DISTANCE_WEIGHT_FOR_LAST;
+    static const float NEAREST_DISTANCE_BIAS_FOR_LAST;
+    static const float ANGLE_WEIGHT;
+    static const float DEEP_CORNER_ANGLE_THRESHOLD;
+    static const float SKIP_DEEP_CORNER_PROBABILITY;
+    static const float CORNER_ANGLE_THRESHOLD;
+    static const float STRAIGHT_ANGLE_THRESHOLD;
+    static const float SKIP_CORNER_PROBABILITY;
+    static const float SPEED_MARGIN;
+    static const float CENTER_VALUE_OF_NORMALIZED_DISTRIBUTION;
+    static const float SPEEDxANGLE_WEIGHT_FOR_STANDARD_DIVIATION;
+    static const float MAX_SPEEDxANGLE_RATE_FOR_STANDERD_DIVIATION;
+    static const float SPEEDxNEAREST_WEIGHT_FOR_STANDARD_DIVIATION;
+    static const float MAX_SPEEDxNEAREST_RATE_FOR_STANDERD_DIVIATION;
+    static const float MIN_STANDERD_DIVIATION;
+    static const float PREV_DISTANCE_WEIGHT;
+    static const float NEXT_DISTANCE_WEIGHT;
+
+    // Used by ProximityInfoStateUtils::suppressCharProbabilities()
+    static const float SUPPRESSION_LENGTH_WEIGHT;
+    static const float MIN_SUPPRESSION_RATE;
+    static const float SUPPRESSION_WEIGHT;
+    static const float SUPPRESSION_WEIGHT_FOR_PROBABILITY_GAIN;
+    static const float SKIP_PROBABALITY_WEIGHT_FOR_PROBABILITY_GAIN;
+
+    // Used by ProximityInfoStateUtils::getMostProbableString()
+    static const float DEMOTION_LOG_PROBABILITY;
+
+    // Used by ProximityInfoStateUtils::updateSampledSearchKeySets()
+    static const float SEARCH_KEY_RADIUS_RATIO;
+
+    // Used by ProximityInfoStateUtils::calculateBeelineSpeedRate()
+    static const int LOOKUP_RADIUS_PERCENTILE;
+    static const int FIRST_POINT_TIME_OFFSET_MILLIS;
+    static const int STRONG_DOUBLE_LETTER_TIME_MILLIS;
+
+    // Used by ProximityInfoStateUtils::calculateNormalizedSquaredDistance()
+    static const int NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR;
+
+ private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(ProximityInfoParams);
+};
+} // namespace latinime
+#endif // LATINIME_PROXIMITY_INFO_PARAMS_H