php semantic search
1.0.0
이 클래스에는 Semantic Search를위한 인터페이스와 Ropherta를 포함시켜 Embedder로 사용하고 SQLITE3 벡터 검색을 벡터 데이터베이스로 사용하는 인터페이스가 포함되어 있습니다. SQLITE3 FTS4 및 BM25를 사용한 키워드 검색도 제공됩니다.
벡터 데이터베이스를 채우기 위해 Ingester 클래스에는 Langchain에서 사용 가능한 것과 유사한 재귀 덩어리가 포함되어 있지만 소스 문서의 오프셋을 다시 참조 할 수있는 속도가 약간 높아집니다.
보다 고급 용도로는 벡터 검색을 재선자로 사용하고 하이드를 사용하여 대칭 임베딩을 얻는 것이 포함됩니다.
STACKOVERFLOW 및 PHP 문서의 35,000 개가 넘는 문서와 인덱스를 다운로드 할 수 있습니다.
섭취 구성 요소는 한 줄에 잘 형성된 JSON 문서와 함께 JSONL 형식의 문서를 가져옵니다.
텍스트는 일반 텍스트 UTF-8 인코딩 (JSON 사양에 따라)이어야합니다. 시스템은 섭취시 덩어리로 분할됩니다.
{ "url": "...", "title": "...", "text": "...", "section": "...", "license": "..." }
SQLITE-VSS가 설치되어 있어야합니다 (Vector0 및 VSS0.SO)
세트
[sqlite3]
; Directory pointing to SQLite3 extensions
; https://php.net/sqlite3.extension-dir
sqlite3.extension_dir = /path/to/the/sqlite3-vss-dllsapt install libgomp1 libblas3 liblapack3ONNX 프레임 워크 설치 :
composer exec -- php -r "require 'vendor/autoload.php'; OnnxRuntimeVendor::check();"
다국어 모델을 사용하려면이 모델을 다운로드하지 말고 다음 섹션의 지침을 따르십시오. 영어 모델의 경우 문장 Roberta Onnx 모델을 다운로드합니다 (시간이 걸리면 모델의 크기는 362MB입니다) :
composer exec -- php -r "require 'vendor/autoload.php'; TextualizationSentenceTransphormersVendor::check();"
문장 라이브러리 다운로드 :
composer exec -- php -r "require 'vendor/autoload.php'; TextualizationSentencePieceVendor::check();"
XLM Tokenizer 문장 BPE 모델 다운로드 :
composer exec -- php -r "require 'vendor/autoload.php'; TextualizationRophertaTokenizerVendor::check();"
다국어 -E5-Small 모델을 다운로드하십시오 (471MB 크기) :
composer exec -- php -r "require 'vendor/autoload.php'; TextualizationSentenceTransphormersVendor::check(true);"
참고 : 영어 모델을 다운로드 한 경우 먼저 삭제해야합니다. 현재 하나의 모델 만 가능하며,이 제한은 향후 버전에서 해제됩니다.
위의 지침에 따라 sqlite3 확장 및 Ropherta를 설치하십시오.
http://textualization.com/download/phpsemsearch_0.1.tar.bz2 (192mb)에서 데이터 및 인덱스를 다운로드하십시오.
파일 vector.db 및 keyword.db 루트 폴더로 압축하고 이동하십시오.
최고 문서는 꽤 적합 해 보입니다.
$ composer run-script query keyword " composer produce time-out on script execution "
> Composer C onfig::disableProcessTimeout
> @php scripts/query.php ' keyword ' ' composer produce time-out on script execution '
Search query: compos OR produc OR time OR out OR on OR script OR execut
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30. SearchResult[12.457255454068,https://stackoverflow.com/q/4869611 0, ' Fatal error: Maximum execution time of 0 seconds exceeded ' ]
31. SearchResult[12.376381360159,https://stackoverflow.com/q/15776400 0, ' make script execution to unlimited ' ]
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49. SearchResult[11.603155219238,https://stackoverflow.com/q/35681947 0, ' How to get PHP max_execution_time from the command line? ' ]키워드만큼 좋지는 않지만 결과는 실제로 다릅니다. 문서에 대한 쿼리가 아닌 유사한 문서를 검색 할 때 대칭 임베더 (문장 Roberta)를 사용한 벡터 검색이 더 잘 작동합니다. 그러한 경우 하이드 (아래에 제시된)가 더 좋습니다. 대안, 비대칭 임베더 (강사와 같은)는 ONNX를 통해 PHP로 포팅 될 수 있습니다.
$ composer run-script query vector " How to stop composer giving a time-out on a script execution "
> Composer C onfig::disableProcessTimeout
> @php scripts/query.php ' vector ' ' How to stop composer giving a time-out on a script execution '
0. SearchResult[-0.51090812683105,https://www.php.net/manual/en/function.oci-bind-by-name.php 14, ' function oci-bind-by-name ' ]
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49. SearchResult[-0.61479258537292,https://stackoverflow.com/q/10520390 0, ' Stop script execution upon notice/warning ' ]키워드와 벡터 결합. 더 정확해야합니다.
$ composer run-script query reranked " How to stop composer giving a time-out on a script execution "
> Composer C onfig::disableProcessTimeout
> @php scripts/query.php ' reranked ' ' How to stop composer giving a time-out on a script execution '
Search query: how OR to OR stop OR compos OR give OR a OR time OR out OR on OR script OR execut
0. SearchResult[-0.61479258537292,https://stackoverflow.com/q/10520390 0, ' Stop script execution upon notice/warning ' ]이 기능을 사용하려면 OpenAI API 키가 필요합니다. 파일, 환경 변수 또는 생성자 직접 파일을 통과 할 수 있습니다. OpenAi를 호출하는 것은 매우 느립니다 . 이 예에서는 chatgpt 텍스트가 벡터 검색을 반드시 이상적이지 않은 방향으로 버립니다. 짧은 텍스트가 더 좋았을 수도 있습니다.
$ composer run-script query ' {"class": "\Textualization\SemanticSearch\VectorHydeIndex", "completion":{"open_ai_key":"/path/to/key"}} ' " How to stop composer giving a time-out on a script execution "
> Composer C onfig::disableProcessTimeout
> @php scripts/query.php ' {"class": "\Textualization\SemanticSearch\VectorHydeIndex", "completion":{"open_ai_key":"/path/to/key"}} ' ' How to stop composer giving a time-out on a script execution '
Hdydrated query: There are several ways to prevent Composer from timing out during script execution:
1. Increase the timeout limit: By default, Composer has a timeout limit of 300 seconds (5 minutes). You can increase this limit by modifying the ` max_execution_time ` directive in your PHP configuration file (php.ini). Set it to a higher value, such as 600 (10 minutes) or more, depending on your script ' s requirements.
2. Optimize your script: If your script is taking too long to execute, consider optimizing it to reduce the execution time. Analyze your code and identify any bottlenecks or areas that can be improved. Use efficient algorithms, avoid unnecessary loops or recursive calls, and optimize database queries if applicable.
3. Split your script into smaller tasks: If your script performs multiple tasks, consider breaking it down into smaller tasks and executing them separately. This way, you can avoid hitting the timeout limit by completing each task within the allowed time frame.
4. Use command-line execution: Instead of running the script through a web server, you can execute it via the command line. Command-line execution typically has a longer timeout limit compared to web server execution. You can run the script using the `php` command followed by the script ' s file path.
5. Increase memory limit: If your script requires more memory to execute, you can increase the memory limit in your PHP configuration file (php.ini). Modify the ` memory_limit ` directive and set it to a higher value, such as 256M or more, depending on your script ' s memory requirements.
6. Use caching: If your script performs repetitive or resource-intensive tasks, consider implementing caching mechanisms. Caching can help reduce the execution time by storing and retrieving precomputed or frequently accessed data instead of recalculating it every time.
7. Use asynchronous processing: If your script involves time-consuming operations, consider using asynchronous processing techniques. Instead of waiting for each operation to complete before moving to the next, you can execute them concurrently or in the background using tools like queues, workers, or event-driven architectures.
Remember to restart your web server or PHP service after making changes to the PHP configuration file for the changes to take effect.
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49. SearchResult[-0.69992303848267,https://stackoverflow.com/q/19249159 0, ' Best practice multi language website ' ]URL 및 청크 번호가 주어지면 Fetch 스크립트는 다음과 같습니다.
$ composer run-script fetch vector https://stackoverflow.com/q/2077576 2
> @php scripts/fetch.php ' vector ' ' https://stackoverflow.com/q/2077576 ' ' 2 '
URL: https://stackoverflow.com/q/2077576
Chunk: 2
Title: PHP & mySQL: When exactly to use htmlentities ?
Offset-start: 2169
Offset-end: 3238
Section: StackOverlow
License: CC-BY-SA-3.0
Text:
<p>I thought it might help to add some more specific details of a specific situation here. Consider that there is a 'Preview' page. Now when I submit the input from a textarea, the Preview page receives the input and shows it html and at the same time, a hidden input collects this input. When the submit button on the Preview button is hit, then the data from the hidden input is POST'ed to a new page and that page inserts the data contained in the hidden input, into the DB. If I do not apply htmlentities when the form is initially submitted (but apply only strip_tags and mysql_real_escape_string) and there's a malicious input in the textarea, the hidden input is broken and the last few characters of the hidden input visibly seen as <code>" /></code> on the page, which is undesirable. So keeping this in mind, I need to do something to preserve the integrity of the hidden input properly on the Preview page and yet collect the data in the hidden input so that it does not break it. How do I go about this? Apologize for the delay in posting this info.</p>키워드 인덱스는 크게 연결되지 않았습니다 (모든 청크 번호는 0입니다).
문서는이 문서의 맨 위에 설명 된 형식의 JSONL 파일로 제공됩니다.
다운로드 할 수있는 샘플 파일을 사용할 수 있습니다.
$ composer run-script index keyword sophp.jsonl$ composer run-script index vector sophp.jsonl재고 인덱스를 사용하려면 벡터와 키워드 인덱스를 별도로 만듭니다.
벡터 인덱싱은 약 하루가 걸리고 현재 상당한 양의 RAM을 소비합니다.
재귀 chunker는 독립형으로 사용할 수 있습니다.
$ composer run-script chunk ropherta null 1024 tests/sornd1000.jsonl output.jsonl 출력 JSONL 문서에는 키가 있습니다.
title )text )url )chunk_num )offset_start )offset_end )license ) 다른 토큰 화제가 가능합니다. scripts 폴더의 코드를 참조하십시오. 문자열 null (null)을 사용하면 크기를 토큰 대신 문자로 설정합니다.
$ composer run-script embed /path/to/model.onnx " actual text to compute embeddings " Open AI Chatgpt와 같은 완료 서비스를 사용하여 답변을 확장하려면 사용 :
$ composer run-script hydrate /path/to/open-ai-key 1024 tests/sornd1000.jsonl output.jsonl JSON 객체의 title 에서 필드 completion 채 웁니다.
스폰서에게 감사드립니다.
