SPARQLqueries/about.html at master · johnsamuelwrites/SPARQLqueries · GitHub

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<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description"
      content="About SPARQLqueries - An open-source resource for learning SPARQL through real-world queries on Wikidata." />
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    <link rel="icon" href="./favicon.svg" type="image/svg+xml" />
    <title>About - SPARQLqueries</title>
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    <link rel="stylesheet" type="text/css" href="style.css" />
  </head>

  <body vocab="http://schema.org/" typeof="Website">
    <!-- Header -->
    <header id="header">
      <div id="logo">
        <a href="./index.html">SPARQLqueries</a>
      </div>
      <div id="headersearch">
        <form action="./search.html" method="get">
          <input id="headersearchtext" type="text" name="search" placeholder="Search queries..." aria-label="Search" />
          <button id="headersearchbutton" type="submit">Search</button>
        </form>
        <button class="theme-toggle" id="themeToggle" aria-label="Toggle theme">
          <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
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          </svg>
        </button>
      </div>
    </header>

    <!-- Sidebar Navigation -->
    <nav id="sidebar">
      <div id="sidebarlinks">
        <div class="sidebar-section">Core Chapters</div>
        <ul>
          <li><a href="./index.html">Home</a></li>
          <li><a href="basic/index.html">Basic</a></li>
          <li><a href="expressions/index.html">Expressions</a></li>
          <li><a href="aggregate/index.html">Aggregate</a></li>
          <li><a href="advanced/index.html">Advanced</a></li>
          <li><a href="federation/index.html">Federation</a></li>
        </ul>
        <div class="sidebar-section">Domain Chapters</div>
        <ul>
          <li><a href="temporal/index.html">Temporal</a></li>
          <li><a href="geospatial/index.html">Geospatial</a></li>
          <li><a href="multilingual/index.html">Multilingual</a></li>
          <li><a href="patterns/index.html">Patterns</a></li>
        </ul>
        <div class="sidebar-section">Resources</div>
        <ul>
          <li><a href="about.html" class="active">About</a></li>
          <li><a href="https://query.wikidata.org/" target="_blank" rel="noopener">Wikidata Query Service ↗</a></li>
        </ul>
      </div>
    </nav>

    <!-- Main Content -->
    <main id="content">
      <!-- Hero Section -->
      <section class="hero">
        <div class="hero-content">
          <span class="hero-badge">Open Source Project</span>
          <h1>About SPARQLqueries</h1>
          <p class="hero-subtitle">
            An open-source learning resource designed to go beyond traditional SPARQL tutorials
            by working with real-world data from Wikidata and demonstrating practical query techniques.
          </p>
        </div>
      </section>

      <!-- Mission Section -->
      <section class="section">
        <h2>Our Mission</h2>
        <p>
          <strong>SPARQLqueries</strong> was created to bridge the gap between theoretical SPARQL knowledge
          and practical application. While many resources teach SPARQL syntax, few demonstrate how to work
          with real-world knowledge graphs at scale.
        </p>
        <p>
          This project aims to:
        </p>
        <ul>
          <li><strong>Teach by example</strong> — Every query runs against live Wikidata endpoints</li>
          <li><strong>Cover real challenges</strong> — Address common issues like missing data, multilingual labels, and
            performance optimization</li>
          <li><strong>Explore multiple domains</strong> — From programming languages to cultural heritage and urban data
          </li>
          <li><strong>Demonstrate all SPARQL features</strong> — Progressive coverage from basic SELECT to advanced
            federation</li>
          <li><strong>Stay current</strong> — Evolve with the semantic web and knowledge graph ecosystem</li>
        </ul>
      </section>

      <!-- What Makes This Different -->
      <section class="section">
        <h2>What Makes This Different?</h2>

        <div class="chapter-grid">
          <div class="chapter-card">
            <div class="chapter-card-icon">🌍</div>
            <h3>Real Data</h3>
            <p>
              No toy examples. Every query works with Wikidata's billions of triples,
              teaching you to handle real-world complexity.
            </p>
          </div>

          <div class="chapter-card">
            <div class="chapter-card-icon">🔗</div>
            <h3>Multi-Domain</h3>
            <p>
              Explore programming languages, cultural heritage, urban geography,
              and more — see how SPARQL adapts to different knowledge domains.
            </p>
          </div>

          <div class="chapter-card">
            <div class="chapter-card-icon">🚀</div>
            <h3>Progressive Learning</h3>
            <p>
              From your first SELECT to complex federated queries across multiple
              endpoints, each chapter builds on the last.
            </p>
          </div>

          <div class="chapter-card">
            <div class="chapter-card-icon">⚡</div>
            <h3>Run Anywhere</h3>
            <p>
              Click "Run on Wikidata" to execute queries instantly.
              No setup required — start learning immediately.
            </p>
          </div>
        </div>
      </section>

      <!-- Author Section -->
      <section class="section">
        <h2>Author</h2>
        <div class="chapter-card" style="max-width: 400px;">
          <div class="chapter-card-icon">👤</div>
          <h3>John Samuel</h3>
          <p>
            Researcher and educator passionate about semantic web technologies,
            knowledge graphs, and open data.
          </p>
          <a href="https://github.com/johnsamuelwrites" class="chapter-card-link" target="_blank" rel="noopener">
            View GitHub Profile
          </a>
        </div>
      </section>

      <!-- Technical Stack -->
      <section class="section">
        <h2>Technical Details</h2>

        <h3>Data Sources</h3>
        <ul>
          <li><a href="https://www.wikidata.org/" target="_blank" rel="noopener">Wikidata</a> — Primary knowledge base
            with structured data about the world</li>
          <li><a href="https://wiki.dbpedia.org/" target="_blank" rel="noopener">DBpedia</a> — Structured data extracted
            from Wikipedia</li>
          <li>Additional SPARQL endpoints for federated query examples</li>
        </ul>

        <h3>Standards</h3>
        <ul>
          <li><a href="https://www.w3.org/TR/sparql11-query/" target="_blank" rel="noopener">SPARQL 1.1 Query
              Language</a> — W3C Recommendation</li>
          <li><a href="https://www.w3.org/TR/sparql11-federated-query/" target="_blank" rel="noopener">SPARQL 1.1
              Federated Query</a> — Cross-endpoint queries</li>
          <li><a href="https://www.w3.org/TR/rdf11-concepts/" target="_blank" rel="noopener">RDF 1.1 Concepts</a> —
            Resource Description Framework</li>
        </ul>

        <h3>This Website</h3>
        <ul>
          <li>Pure HTML, CSS, and vanilla JavaScript — no framework dependencies</li>
          <li>Dark-first design with light mode support</li>
          <li>Responsive layout for all screen sizes</li>
          <li>Accessible and performant</li>
        </ul>
      </section>

      <!-- Source Code & License -->
      <section class="section">
        <h2>Source Code & License</h2>

        <p>
          This project is fully open source and welcomes contributions.
        </p>

        <div class="chapter-grid">
          <div class="chapter-card">
            <div class="chapter-card-icon">📦</div>
            <h3>Repository</h3>
            <p>Browse the source code, report issues, or contribute improvements.</p>
            <a href="https://github.com/johnsamuelwrites/SPARQLqueries" class="chapter-card-link" target="_blank"
              rel="noopener">
              View on GitHub
            </a>
          </div>

          <div class="chapter-card">
            <div class="chapter-card-icon">⚖️</div>
            <h3>Licenses</h3>
            <p>
              <strong>Code:</strong> <a href="https://www.gnu.org/licenses/gpl-3.0.html" target="_blank"
                rel="noopener">GPLv3+</a><br />
              <strong>Documentation:</strong> <a href="https://creativecommons.org/licenses/by-sa/4.0/" target="_blank"
                rel="noopener">CC-BY-SA 4.0</a>
            </p>
          </div>
        </div>
      </section>

      <!-- References -->
      <section class="section">
        <h2>References & Resources</h2>

        <h3>SPARQL Learning Resources</h3>
        <ul>
          <li><a href="https://www.w3.org/TR/sparql11-query/" target="_blank" rel="noopener">SPARQL 1.1 Query Language
              Specification</a> — Official W3C documentation</li>
          <li><a href="https://www.wikidata.org/wiki/Wikidata:SPARQL_tutorial" target="_blank" rel="noopener">Wikidata
              SPARQL Tutorial</a> — Wikidata's official guide</li>
          <li><a href="https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples" target="_blank"
              rel="noopener">Wikidata Query Examples</a> — Community-contributed queries</li>
        </ul>

        <h3>Tools</h3>
        <ul>
          <li><a href="https://query.wikidata.org/" target="_blank" rel="noopener">Wikidata Query Service</a> — Execute
            SPARQL queries against Wikidata</li>
          <li><a href="https://www.wikidata.org/wiki/Wikidata:Tools" target="_blank" rel="noopener">Wikidata Tools</a> —
            Collection of useful Wikidata utilities</li>
        </ul>

        <h3>Related Projects</h3>
        <ul>
          <li><a href="https://www.wikidata.org/" target="_blank" rel="noopener">Wikidata</a> — Free knowledge base</li>
          <li><a href="https://www.dbpedia.org/" target="_blank" rel="noopener">DBpedia</a> — Structured Wikipedia data
          </li>
          <li><a href="https://linkeddata.org/" target="_blank" rel="noopener">Linked Data</a> — The web of data</li>
        </ul>
      </section>

      <!-- Contributing -->
      <section class="section">
        <h2>Contributing</h2>
        <p>
          Contributions are welcome! Whether you want to add new queries, fix errors,
          improve documentation, or suggest new features, your input is valued.
        </p>
        <ul>
          <li><strong>Report issues</strong> — Found a bug or error? Open an issue on GitHub</li>
          <li><strong>Submit queries</strong> — Have an interesting SPARQL query? Share it!</li>
          <li><strong>Improve docs</strong> — Help make explanations clearer</li>
          <li><strong>Translate</strong> — Help make content accessible in more languages</li>
        </ul>
        <p>
          <a href="https://github.com/johnsamuelwrites/SPARQLqueries/issues" target="_blank" rel="noopener"
            class="chapter-card-link">
            Open an Issue on GitHub
          </a>
        </p>
      </section>

      <!-- Footer -->
      <footer id="footertext">
        <p>
          <strong>SPARQLqueries</strong> — An open-source learning resource by <a
            href="https://github.com/johnsamuelwrites">John Samuel</a>
        </p>
        <p>
          Code: <a href="https://github.com/johnsamuelwrites/SPARQLqueries">GPLv3+</a> | Documentation: <a
            href="https://creativecommons.org/licenses/by-sa/4.0/">CC-BY-SA</a>
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