CiteSeerX

Perplexity Pro is the most powerful way to search the internet with unlimited Pro Search, upgraded AI models, unlimited file upload, image generation, and API credits. Perplexity Pro is a premium offering from the Perplexity AI platform, designed to provide users with a more advanced and reliable information retrieval and reasoning experience. By integrating a cutting-edge large language model with real-time web search, it can quickly locate relevant sources, summarize intricate topics, and deliver in-depth, contextually accurate answers to users’ queries. Perplexity Pro’s interface emphasizes clarity and ease of use, allowing users to pose complex questions naturally and receive concise, authoritative responses. Enhanced citation features ensure transparency, helping users trace the origin of information and verify its credibility.

The Apache Lucene™ project develops open-source search software. The project releases a core search library, named Lucene™ core, as well as PyLucene, a python binding for Lucene. Lucene Core is a Java library providing powerful indexing and search features, as well as spellchecking, hit highlighting and advanced analysis/tokenization capabilities. The PyLucene sub project provides Python bindings for Lucene Core. The Apache Software Foundation provides support for the Apache community of open-source software projects. Apache Lucene is distributed under a commercially friendly Apache Software license. Apache Lucene set the standard for search and indexing performance. Lucene is the search core of both Apache Solr™ and Elasticsearch™. Our core algorithms along with the Solr search server power applications the world over, ranging from mobile devices to sites like Twitter, Apple and Wikipedia. The goal of Apache Lucene is to provide world class search capabilities.