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Harrison/virtual time (#4658)

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Co-authored-by: ifsheldon <39153080+ifsheldon@users.noreply.github.com>
Co-authored-by: maple.liang <maple.liang@gempoll.com>
This commit is contained in:
Harrison Chase
2023-05-14 10:29:17 -07:00
committed by GitHub
parent f2f2aced6d
commit 243886be93
5 changed files with 148 additions and 38 deletions
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47
docs/modules/indexes/retrievers/examples/time_weighted_vectorstore.ipynb
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@@ -70,7 +70,7 @@
{
"data": {
"text/plain": [
"['5c9f7c06-c9eb-45f2-aea5-efce5fb9f2bd']"
"['d7f85756-2371-4bdf-9140-052780a0f9b3']"
]
},
"execution_count": 3,
@@ -93,7 +93,7 @@
{
"data": {
"text/plain": [
"[Document(page_content='hello world', metadata={'last_accessed_at': datetime.datetime(2023, 4, 16, 22, 9, 1, 966261), 'created_at': datetime.datetime(2023, 4, 16, 22, 9, 0, 374683), 'buffer_idx': 0})]"
"[Document(page_content='hello world', metadata={'last_accessed_at': datetime.datetime(2023, 5, 13, 21, 0, 27, 678341), 'created_at': datetime.datetime(2023, 5, 13, 21, 0, 27, 279596), 'buffer_idx': 0})]"
]
},
"execution_count": 4,
@@ -177,10 +177,51 @@
"retriever.get_relevant_documents(\"hello world\")"
]
},
{
"cell_type": "markdown",
"id": "32e0131e",
"metadata": {},
"source": [
"## Virtual Time\n",
"\n",
"Using some utils in LangChain, you can mock out the time component"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "da080d40",
"metadata": {},
"outputs": [],
"source": [
"from langchain.utils import mock_now\n",
"import datetime"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "7c7deff1",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[Document(page_content='hello world', metadata={'last_accessed_at': MockDateTime(2011, 2, 3, 10, 11), 'created_at': datetime.datetime(2023, 5, 13, 21, 0, 27, 279596), 'buffer_idx': 0})]\n"
]
}
],
"source": [
"# Notice the last access time is that date time\n",
"with mock_now(datetime.datetime(2011, 2, 3, 10, 11)):\n",
" print(retriever.get_relevant_documents(\"hello world\"))"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "bf6d8c90",
"id": "c78d367d",
"metadata": {},
"outputs": [],
"source": []