fix(optimize ttl): manual differentiation of hitrate<1 to fix log(0) warnings
Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>
This commit is contained in:
@@ -162,13 +162,19 @@
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"outputs": [],
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"outputs": [],
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"source": [
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"source": [
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"def optimize_ttl(optimized_hitrates, lambda_vals):\n",
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"def optimize_ttl(optimized_hitrates, lambda_vals):\n",
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" ti_values = np.where(\n",
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" result = []\n",
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" optimized_hitrates < 1,\n",
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" for i in range(len(lambda_vals)):\n",
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" -1 / lambda_vals * np.log(1 - optimized_hitrates),\n",
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" if optimized_hitrates[i] < 1:\n",
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" np.inf\n",
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" result.append(-1 / lambda_vals[i] * np.log(1 - optimized_hitrates[i]))\n",
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" )\n",
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" else:\n",
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" result.append(np.inf)\n",
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" # ti_values = np.where(\n",
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" # optimized_hitrates < 1,\n",
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" # -1 / lambda_vals * np.log(1 - optimized_hitrates),\n",
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" # np.inf\n",
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" # )\n",
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" \n",
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" \n",
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" return ti_values"
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" return np.array(result)"
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]
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]
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@@ -220,7 +226,7 @@
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"cell_type": "code",
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 11,
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"id": "a92c6772-6609-41a8-a3d1-4d640b69a864",
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"id": "a92c6772-6609-41a8-a3d1-4d640b69a864",
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"metadata": {},
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"metadata": {},
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"outputs": [
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"outputs": [
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@@ -229,139 +235,18 @@
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"output_type": "stream",
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"output_type": "stream",
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"text": [
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"text": [
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"[Parallel(n_jobs=-1)]: Using backend LokyBackend with 12 concurrent workers.\n",
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"[Parallel(n_jobs=-1)]: Using backend LokyBackend with 12 concurrent workers.\n",
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"/tmp/ipykernel_137117/3256270718.py:4: RuntimeWarning: divide by zero encountered in log\n",
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"[Parallel(n_jobs=-1)]: Done 26 tasks | elapsed: 0.7s\n",
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"[Parallel(n_jobs=-1)]: Done 26 tasks | elapsed: 0.6s\n",
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"name": "stdout",
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"text": [
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"CPU times: user 54.8 s, sys: 1.33 s, total: 56.1 s\n",
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"Wall time: 3min 23s\n"
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" <th>Objective</th>\n",
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" <th>Optimal TTL</th>\n",
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" <th>db_object_count</th>\n",
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" <td>0.715000</td>\n",
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||||||
|
" <td>[-0.0, -0.0, inf, -0.0, -0.0, -0.0, -0.0, inf,...</td>\n",
|
||||||
|
" <td>10</td>\n",
|
||||||
|
" <td>1.0</td>\n",
|
||||||
|
" <td>0.1</td>\n",
|
||||||
|
" <td>0.01</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>1</th>\n",
|
||||||
|
" <td>0.640000</td>\n",
|
||||||
|
" <td>[inf, -0.0, -0.0, -0.0, -0.0, -0.0, inf, -0.0,...</td>\n",
|
||||||
|
" <td>10</td>\n",
|
||||||
|
" <td>1.0</td>\n",
|
||||||
|
" <td>0.1</td>\n",
|
||||||
|
" <td>0.02</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>2</th>\n",
|
||||||
|
" <td>0.840000</td>\n",
|
||||||
|
" <td>[-0.0, -0.0, -0.0, inf, -0.0, -0.0, -0.0, inf,...</td>\n",
|
||||||
|
" <td>10</td>\n",
|
||||||
|
" <td>1.0</td>\n",
|
||||||
|
" <td>0.1</td>\n",
|
||||||
|
" <td>0.04</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>3</th>\n",
|
||||||
|
" <td>1.550000</td>\n",
|
||||||
|
" <td>[-0.0, -0.0, -0.0, -0.0, -0.0, inf, -0.0, -0.0...</td>\n",
|
||||||
|
" <td>10</td>\n",
|
||||||
|
" <td>1.0</td>\n",
|
||||||
|
" <td>0.1</td>\n",
|
||||||
|
" <td>0.05</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>4</th>\n",
|
||||||
|
" <td>2.679577</td>\n",
|
||||||
|
" <td>[0.07466480059267179, -0.0, -0.0, 0.0338036715...</td>\n",
|
||||||
|
" <td>10</td>\n",
|
||||||
|
" <td>1.0</td>\n",
|
||||||
|
" <td>0.1</td>\n",
|
||||||
|
" <td>0.07</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>...</th>\n",
|
||||||
|
" <td>...</td>\n",
|
||||||
|
" <td>...</td>\n",
|
||||||
|
" <td>...</td>\n",
|
||||||
|
" <td>...</td>\n",
|
||||||
|
" <td>...</td>\n",
|
||||||
|
" <td>...</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>32719</th>\n",
|
||||||
|
" <td>8560.000000</td>\n",
|
||||||
|
" <td>[0.5493061443340548, 1.0986122886681096, 0.078...</td>\n",
|
||||||
|
" <td>500</td>\n",
|
||||||
|
" <td>500.0</td>\n",
|
||||||
|
" <td>10.0</td>\n",
|
||||||
|
" <td>15.00</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>32720</th>\n",
|
||||||
|
" <td>11625.000000</td>\n",
|
||||||
|
" <td>[0.17328679513998632, 0.6931471805599453, 0.69...</td>\n",
|
||||||
|
" <td>500</td>\n",
|
||||||
|
" <td>500.0</td>\n",
|
||||||
|
" <td>10.0</td>\n",
|
||||||
|
" <td>20.00</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>32721</th>\n",
|
||||||
|
" <td>21466.000000</td>\n",
|
||||||
|
" <td>[0.5108256237659907, 0.1702752079219969, 0.170...</td>\n",
|
||||||
|
" <td>500</td>\n",
|
||||||
|
" <td>500.0</td>\n",
|
||||||
|
" <td>10.0</td>\n",
|
||||||
|
" <td>25.00</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>32722</th>\n",
|
||||||
|
" <td>15644.000000</td>\n",
|
||||||
|
" <td>[0.2231435513142097, 0.022314355131420972, 0.1...</td>\n",
|
||||||
|
" <td>500</td>\n",
|
||||||
|
" <td>500.0</td>\n",
|
||||||
|
" <td>10.0</td>\n",
|
||||||
|
" <td>50.00</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" <tr>\n",
|
||||||
|
" <th>32723</th>\n",
|
||||||
|
" <td>15892.000000</td>\n",
|
||||||
|
" <td>[0.10536051565782628, 0.02634012891445657, 0.0...</td>\n",
|
||||||
|
" <td>500</td>\n",
|
||||||
|
" <td>500.0</td>\n",
|
||||||
|
" <td>10.0</td>\n",
|
||||||
|
" <td>100.00</td>\n",
|
||||||
|
" </tr>\n",
|
||||||
|
" </tbody>\n",
|
||||||
|
"</table>\n",
|
||||||
|
"<p>32724 rows × 6 columns</p>\n",
|
||||||
|
"</div>"
|
||||||
|
],
|
||||||
|
"text/plain": [
|
||||||
|
" Objective Optimal TTL \\\n",
|
||||||
|
"0 0.715000 [-0.0, -0.0, inf, -0.0, -0.0, -0.0, -0.0, inf,... \n",
|
||||||
|
"1 0.640000 [inf, -0.0, -0.0, -0.0, -0.0, -0.0, inf, -0.0,... \n",
|
||||||
|
"2 0.840000 [-0.0, -0.0, -0.0, inf, -0.0, -0.0, -0.0, inf,... \n",
|
||||||
|
"3 1.550000 [-0.0, -0.0, -0.0, -0.0, -0.0, inf, -0.0, -0.0... \n",
|
||||||
|
"4 2.679577 [0.07466480059267179, -0.0, -0.0, 0.0338036715... \n",
|
||||||
|
"... ... ... \n",
|
||||||
|
"32719 8560.000000 [0.5493061443340548, 1.0986122886681096, 0.078... \n",
|
||||||
|
"32720 11625.000000 [0.17328679513998632, 0.6931471805599453, 0.69... \n",
|
||||||
|
"32721 21466.000000 [0.5108256237659907, 0.1702752079219969, 0.170... \n",
|
||||||
|
"32722 15644.000000 [0.2231435513142097, 0.022314355131420972, 0.1... \n",
|
||||||
|
"32723 15892.000000 [0.10536051565782628, 0.02634012891445657, 0.0... \n",
|
||||||
|
"\n",
|
||||||
|
" db_object_count cache_size c_f (Miss Cost) c_delta (Refresh Cost) \n",
|
||||||
|
"0 10 1.0 0.1 0.01 \n",
|
||||||
|
"1 10 1.0 0.1 0.02 \n",
|
||||||
|
"2 10 1.0 0.1 0.04 \n",
|
||||||
|
"3 10 1.0 0.1 0.05 \n",
|
||||||
|
"4 10 1.0 0.1 0.07 \n",
|
||||||
|
"... ... ... ... ... \n",
|
||||||
|
"32719 500 500.0 10.0 15.00 \n",
|
||||||
|
"32720 500 500.0 10.0 20.00 \n",
|
||||||
|
"32721 500 500.0 10.0 25.00 \n",
|
||||||
|
"32722 500 500.0 10.0 50.00 \n",
|
||||||
|
"32723 500 500.0 10.0 100.00 \n",
|
||||||
|
"\n",
|
||||||
|
"[32724 rows x 6 columns]"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
"execution_count": 19,
|
||||||
|
"metadata": {},
|
||||||
|
"output_type": "execute_result"
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"source": [
|
||||||
|
"results_df"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": null,
|
||||||
|
"id": "b3dbf01b-84f8-4404-b635-381b46679876",
|
||||||
|
"metadata": {},
|
||||||
"outputs": [],
|
"outputs": [],
|
||||||
"source": []
|
"source": []
|
||||||
}
|
}
|
||||||
|
|||||||
Reference in New Issue
Block a user