1 files changed, 0 insertions, 149 deletions
diff --git a/bordeaux/service/src/android/bordeaux/services/LocationCluster.java b/bordeaux/service/src/android/bordeaux/services/LocationCluster.java
deleted file mode 100644
index c9f753f76..000000000
--- a/bordeaux/service/src/android/bordeaux/services/LocationCluster.java
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Copyright (C) 2012 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 android.bordeaux.services;
-
-import android.location.Location;
-import android.text.format.Time;
-import android.util.Log;
-
-import java.lang.Math;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Map;
-
-public class LocationCluster extends BaseCluster {
-    public static String TAG = "LocationCluster";
-
-    private ArrayList<Location> mLocations = new ArrayList<Location>();
-    private HashMap<String, Long> mNewHistogram = new HashMap<String, Long>();
-
-    private String mSemanticClusterId = null;
-
-    public void setSemanticClusterId(String semanticClusterId) {
-        mSemanticClusterId = semanticClusterId;
-    }
-
-    public String getSemanticClusterId() {
-        return mSemanticClusterId;
-    }
-
-    public boolean hasSemanticClusterId() {
-        return mSemanticClusterId != null;
-    }
-
-    // TODO: make it a singleton class
-    public LocationCluster(Location location, long duration) {
-        super(location);
-        addSample(location, duration);
-    }
-
-    public void addSample(Location location, long duration) {
-        updateTemporalHistogram(location.getTime(), duration);
-
-        // use time field to store duation of this location
-        // TODO: extend Location class with additional field for this.
-        location.setTime(duration);
-        mLocations.add(location);
-    }
-
-    public void consolidate() {
-        // If there is no new location added during this period, do nothing.
-        if (mLocations.size() == 0) {
-            return;
-        }
-
-        double[] newCenter = {0f, 0f, 0f};
-        long newDuration = 0l;
-        // update cluster center
-        for (Location location : mLocations) {
-            double[] vector = getLocationVector(location);
-            long duration = location.getTime(); // in seconds
-
-            if (duration == 0) {
-                throw new RuntimeException("location duration is zero");
-            }
-
-            newDuration += duration;
-            for (int i = 0; i < VECTOR_LENGTH; ++i) {
-                newCenter[i] += vector[i] * duration;
-            }
-        }
-        if (newDuration == 0l) {
-            throw new RuntimeException("new duration is zero!");
-        }
-        for (int i = 0; i < VECTOR_LENGTH; ++i) {
-            newCenter[i] /= newDuration;
-        }
-        // remove location data
-        mLocations.clear();
-
-        // The updated center is the weighted average of the existing and the new
-        // centers. Note that if the cluster is consolidated for the first time,
-        // the weight for the existing cluster would be zero.
-        averageCenter(newCenter, newDuration);
-
-        // update histogram
-        for (Map.Entry<String, Long> entry : mNewHistogram.entrySet()) {
-            String timeLabel = entry.getKey();
-            long duration = entry.getValue();
-            if (mHistogram.containsKey(timeLabel)) {
-                duration += mHistogram.get(timeLabel);
-            }
-            mHistogram.put(timeLabel, duration);
-        }
-        mDuration += newDuration;
-        mNewHistogram.clear();
-    }
-
-    /*
-     * if the new created cluster whose covered area overlaps with any existing
-     * cluster move the center away from that cluster till there is no overlap.
-     */
-    public void moveAwayCluster(LocationCluster cluster, float distance) {
-        double[] vector = new double[VECTOR_LENGTH];
-
-        double dot = 0f;
-        for (int i = 0; i < VECTOR_LENGTH; ++i) {
-            dot += mCenter[i] * cluster.mCenter[i];
-        }
-        double norm = 0f;
-        for (int i = 0; i < VECTOR_LENGTH; ++i) {
-            vector[i] = mCenter[i] - dot * cluster.mCenter[i];
-            norm += vector[i] * vector[i];
-        }
-        norm = Math.sqrt(norm);
-
-        double radian = distance / EARTH_RADIUS;
-        for (int i = 0; i < VECTOR_LENGTH; ++i) {
-            mCenter[i] = cluster.mCenter[i] * Math.cos(radian) +
-                    (vector[i] / norm) * Math.sin(radian);
-        }
-    }
-
-    private void updateTemporalHistogram(long time, long duration) {
-        HashMap<String, String> timeFeatures = TimeStatsAggregator.getAllTimeFeatures(time);
-
-        String timeOfWeek = timeFeatures.get(TimeStatsAggregator.TIME_OF_WEEK);
-        long totalDuration = (mNewHistogram.containsKey(timeOfWeek)) ?
-            mNewHistogram.get(timeOfWeek) + duration : duration;
-        mNewHistogram.put(timeOfWeek, totalDuration);
-
-        String timeOfDay = timeFeatures.get(TimeStatsAggregator.TIME_OF_DAY);
-        totalDuration = (mNewHistogram.containsKey(timeOfDay)) ?
-            mNewHistogram.get(timeOfDay) + duration : duration;
-        mNewHistogram.put(timeOfDay, totalDuration);
-    }
-}