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This adds implementation of MMR search in pinecone; and I have two
semi-related observations about this vector store class:
- Maybe we should also have a
`similarity_search_by_vector_returning_embeddings` like in supabase, but
it's not in the base `VectorStore` class so I didn't implement
- Talking about the base class, there's
`similarity_search_with_relevance_scores`, but in pinecone it is called
`similarity_search_with_score`; maybe we should consider renaming it to
align with other `VectorStore` base and sub classes (or add that as an
alias for backward compatibility)
#### Who can review?
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- VectorStores / Retrievers / Memory - @dev2049
# Introduces embaas document extraction api endpoints
In this PR, we add support for embaas document extraction endpoints to
Text Embedding Models (with LLMs, in different PRs coming). We currently
offer the MTEB leaderboard top performers, will continue to add top
embedding models and soon add support for customers to deploy thier own
models. Additional Documentation + Infomation can be found
[here](https://embaas.io).
While developing this integration, I closely followed the patterns
established by other langchain integrations. Nonetheless, if there are
any aspects that require adjustments or if there's a better way to
present a new integration, let me know! :)
Additionally, I fixed some docs in the embeddings integration.
Related PR: #5976
#### Who can review?
DataLoaders
- @eyurtsev
This creates a new kind of text splitter for markdown files.
The user can supply a set of headers that they want to split the file
on.
We define a new text splitter class, `MarkdownHeaderTextSplitter`, that
does a few things:
(1) For each line, it determines the associated set of user-specified
headers
(2) It groups lines with common headers into splits
See notebook for example usage and test cases.
Adds a new parameter `relative_chunk_overlap` for the
`SentenceTransformersTokenTextSplitter` constructor. The parameter sets
the chunk overlap using a relative factor, e.g. for a model where the
token limit is 100, a `relative_chunk_overlap=0.5` implies that
`chunk_overlap=50`
Tag maintainers/contributors who might be interested:
@hwchase17, @dev2049
#### What I do
Adding embedding api for
[DashScope](https://help.aliyun.com/product/610100.html), which is the
DAMO Academy's multilingual text unified vector model based on the LLM
base. It caters to multiple mainstream languages worldwide and offers
high-quality vector services, helping developers quickly transform text
data into high-quality vector data. Currently supported languages
include Chinese, English, Spanish, French, Portuguese, Indonesian, and
more.
#### Who can review?
Models
- @hwchase17
- @agola11
---------
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
Added description of LangChain Decorators ✨ into the integration section
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Inspired by the filtering capability available in ChromaDB, added the
same functionality to the FAISS vectorestore as well. Since FAISS does
not have an inbuilt method of filtering used the approach suggested in
this [thread](https://github.com/facebookresearch/faiss/issues/1079)
Langchain Issue inspiration:
https://github.com/hwchase17/langchain/issues/4572
- [x] Added filtering capability to semantic similarly and MMR
- [x] Added test cases for filtering in
`tests/integration_tests/vectorstores/test_faiss.py`
#### Who can review?
Tag maintainers/contributors who might be interested:
VectorStores / Retrievers / Memory
- @dev2049
- @hwchase17
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I used the APIChain sometimes it failed during the intermediate step
when generating the api url and calling the `request` function. After
some digging, I found the url sometimes includes the space at the
beginning, like `%20https://...api.com` which causes the `
self.requests_wrapper.get` internal function to fail.
Including a little string preprocessing `.strip` to remove the space
seems to improve the robustness of the APIchain to make sure it can send
the request and retrieve the API result more reliably.
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@vowelparrot
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HuggingFace -> Hugging Face
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Obey `handler.raise_error` in `_ahandle_event_for_handler`
Exceptions for async callbacks were only logged as warnings, also when
`raise_error = True`
#### Who can review?
@hwchase17
@agola11
@eyurtsev
当Confluence文档内容中包含附件，且附件内容为非英文时，提取出来的文本是乱码的。
When the content of the document contains attachments, and the content
of the attachments is not in English, the extracted text is garbled.
这主要是因为没有为pytesseract传递lang参数，默认情况下只支持英文。
This is mainly because lang parameter is not passed to pytesseract, and
only English is supported by default.
所以我给ConfluenceLoader.load()添加了ocr_languages参数，以便支持多种语言。
So I added the ocr_languages parameter to ConfluenceLoader.load () to
support multiple languages.
Fixes (not reported) an error that may occur in some cases in the
RecursiveCharacterTextSplitter.
An empty `new_separators` array ([]) would end up in the else path of
the condition below and used in a function where it is expected to be
non empty.
```python
if new_separators is None:
...
else:
# _split_text() expects this array to be non-empty!
other_info = self._split_text(s, new_separators)
```
resulting in an `IndexError`
```python
def _split_text(self, text: str, separators: List[str]) -> List[str]:
"""Split incoming text and return chunks."""
final_chunks = []
# Get appropriate separator to use
> separator = separators[-1]
E IndexError: list index out of range
langchain/text_splitter.py:425: IndexError
```
#### Who can review?
@hwchase17 @eyurtsev
---------
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
This fixes a token limit bug in the
SentenceTransformersTokenTextSplitter. Before the token limit was taken
from tokenizer used by the model. However, for some models the token
limit of the tokenizer (from `AutoTokenizer.from_pretrained`) does not
equal the token limit of the model. This was a false assumption.
Therefore, the token limit of the text splitter is now taken from the
sentence transformers model token limit.
Twitter: @plasmajens
#### Before submitting
#### Who can review?
@hwchase17 and/or @dev2049
---------
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
This PR updates the Vectara integration (@hwchase17 ):
* Adds reuse of requests.session to imrpove efficiency and speed.
* Utilizes Vectara's low-level API (instead of standard API) to better
match user's specific chunking with LangChain
* Now add_texts puts all the texts into a single Vectara document so
indexing is much faster.
* updated variables names from alpha to lambda_val (to be consistent
with Vectara docs) and added n_context_sentence so it's available to use
if needed.
* Updates to documentation and tests
---------
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
# Unstructured XML Loader
Adds an `UnstructuredXMLLoader` class for .xml files. Works with
unstructured>=0.6.7. A plain text representation of the text with the
XML tags will be available under the `page_content` attribute in the
doc.
### Testing
```python
from langchain.document_loaders import UnstructuredXMLLoader
loader = UnstructuredXMLLoader(
"example_data/factbook.xml",
)
docs = loader.load()
```
## Who can review?
@hwchase17
@eyurtsev
Added AwaDB vector store, which is a wrapper over the AwaDB, that can be
used as a vector storage and has an efficient similarity search. Added
integration tests for the vector store
Added jupyter notebook with the example
Delete a unneeded empty file and resolve the
conflict(https://github.com/hwchase17/langchain/pull/5886)
Please check, Thanks!
@dev2049
@hwchase17
---------
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---------
Co-authored-by: ljeagle <vincent_jieli@yeah.net>
Co-authored-by: vincent <awadb.vincent@gmail.com>
Based on the inspiration from the SQL chain, the following three
parameters are added to Graph Cypher Chain.
- top_k: Limited the number of results from the database to be used as
context
- return_direct: Return database results without transforming them to
natural language
- return_intermediate_steps: Return intermediate steps
