rapids/latest/features/phone-battery/index.html

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RAPIDS provider
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<div class="md-content">
<article class="md-content__inner md-typeset">
<a href="https://github.com/carissalow/rapids/edit/master/docs/features/phone-battery.md" title="Edit this page" class="md-content__button md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
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<h1 id="phone-battery">Phone Battery<a class="headerlink" href="#phone-battery" title="Permanent link">&para;</a></h1>
<p>Sensor parameters description for <code>[PHONE_BATTERY]</code>:</p>
<table>
<thead>
<tr>
<th>Key&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>[TABLE]</code></td>
<td>Database table where the battery data is stored</td>
</tr>
<tr>
<td><code>[EPISODE_THRESHOLD_BETWEEN_ROWS]</code></td>
<td>Difference in minutes between any two rows for them to be considered part of the same battery charge or discharge episode</td>
</tr>
</tbody>
</table>
<h2 id="rapids-provider">RAPIDS provider<a class="headerlink" href="#rapids-provider" title="Permanent link">&para;</a></h2>
<div class="admonition info">
<p class="admonition-title">Available time segments and platforms</p>
<ul>
<li>Available for all time segments</li>
<li>Available for Android and iOS</li>
</ul>
</div>
<div class="admonition info">
<p class="admonition-title">File Sequence</p>
<div class="highlight"><pre><span></span><code>- data/raw/<span class="o">{</span>pid<span class="o">}</span>/phone_battery_raw.csv
- data/interim/<span class="o">{</span>pid<span class="o">}</span>/phone_battery_episodes.csv
- data/interim/<span class="o">{</span>pid<span class="o">}</span>/phone_battery_episodes_resampled.csv
- data/interim/<span class="o">{</span>pid<span class="o">}</span>/phone_battery_episodes_resampled_with_datetime.csv
- data/interim/<span class="o">{</span>pid<span class="o">}</span>/phone_battery_features/phone_battery_<span class="o">{</span>language<span class="o">}</span>_<span class="o">{</span>provider_key<span class="o">}</span>.csv
- data/processed/features/<span class="o">{</span>pid<span class="o">}</span>/phone_battery.csv
</code></pre></div>
</div>
<p>Parameters description for <code>[PHONE_BATTERY][PROVIDERS][RAPIDS]</code>:</p>
<table>
<thead>
<tr>
<th>Key&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>[COMPUTE]</code></td>
<td>Set to <code>True</code> to extract <code>PHONE_BATTERY</code> features from the <code>RAPIDS</code> provider</td>
</tr>
<tr>
<td><code>[FEATURES]</code></td>
<td>Features to be computed, see table below</td>
</tr>
</tbody>
</table>
<p>Features description for <code>[PHONE_BATTERY][PROVIDERS][RAPIDS]</code>:</p>
<table>
<thead>
<tr>
<th>Feature</th>
<th>Units</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>countdischarge</td>
<td>episodes</td>
<td>Number of discharging episodes.</td>
</tr>
<tr>
<td>sumdurationdischarge</td>
<td>minutes</td>
<td>The total duration of all discharging episodes.</td>
</tr>
<tr>
<td>countcharge</td>
<td>episodes</td>
<td>Number of battery charging episodes.</td>
</tr>
<tr>
<td>sumdurationcharge</td>
<td>minutes</td>
<td>The total duration of all charging episodes.</td>
</tr>
<tr>
<td>avgconsumptionrate</td>
<td>episodes/minutes</td>
<td>The average of all episodes&rsquo; consumption rates. An episode&rsquo;s consumption rate is defined as the ratio between its battery delta and duration</td>
</tr>
<tr>
<td>maxconsumptionrate</td>
<td>episodes/minutes</td>
<td>The highest of all episodes&rsquo; consumption rates. An episode&rsquo;s consumption rate is defined as the ratio between its battery delta and duration</td>
</tr>
</tbody>
</table>
<div class="admonition note">
<p class="admonition-title">Assumptions/Observations</p>
<ol>
<li>We convert battery data collected with iOS client v1 (autodetected because battery status <code>4</code> do not exist) to match Android battery format: we swap status <code>3</code> for <code>5</code> and <code>1</code> for <code>3</code></li>
<li>We group battery data into discharge or charge episodes considering any contiguous rows with consecutive reductions or increases of the battery level if they are logged within <code>[EPISODE_THRESHOLD_BETWEEN_ROWS]</code> minutes from each other.</li>
</ol>
</div>
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