fix: to rag-semi-structured template (#14568)

**Description:** 

Fixes to rag-semi-structured template.

- Added required libraries
- pdfminer was causing issues when installing with pip. pdfminer.six
works best
- Changed the pdf name for demo from llama2 to llava


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templates/rag-semi-structured/pyproject.toml

@@ -8,7 +8,7 @@ authors = [
 readme = "README.md"
 
 [tool.poetry.dependencies]
-python = ">=3.8.1,<4.0"
+python = ">=3.9,<3.11"
 langchain = ">=0.0.325"
 tiktoken = ">=0.5.1"
 chromadb = ">=0.4.14"
@@ -16,6 +16,12 @@ openai = "<2"
 unstructured = ">=0.10.19"
 pdf2image = ">=1.16.3"
 pdfminer = "^20191125"
+opencv-python = "^4.8.1.78"
+pandas = "^2.1.4"
+pytesseract = "^0.3.10"
+pdfminer-six = "^20221105"
+unstructured-pytesseract = "^0.3.12"
+unstructured-inference = "^0.7.18"
 
 [tool.poetry.group.dev.dependencies]
 langchain-cli = ">=0.0.15"

templates/rag-semi-structured/rag_semi_structured/chain.py

@@ -16,7 +16,7 @@ from unstructured.partition.pdf import partition_pdf
 # Path to docs
 path = "docs"
 raw_pdf_elements = partition_pdf(
-    filename=path + "LLaMA2.pdf",
+    filename=path + "/LLaVA.pdf",
     # Unstructured first finds embedded image blocks
     extract_images_in_pdf=False,
     # Use layout model (YOLOX) to get bounding boxes (for tables) and find titles