Learn the terminology of book knowledge graphs, AI analysis, and reading insights. Understanding these concepts will help you get the most out of Hikara.
A connection between books that link different domains or fields of knowledge. For example, a bridge might connect a psychology textbook to a business book, showing how behavioral insights apply to leadership. Bridges help you see how ideas from one domain can illuminate another.
A connection between books that present opposing viewpoints or alternative perspectives on similar topics. Challenges represent intellectual debate and show where authors or ideas are in conversation with each other, often disagreeing or offering different frameworks for understanding the world.
A numerical percentage (0-100) that represents how strong Hikara's AI believes a connection is between two books. Higher percentages indicate stronger thematic or ideological alignment. Strength is displayed on connection edges in your knowledge graph.
A connection between books that share similar themes, philosophies, or complementary ideas. Echoes are books that resonate with each other, reinforcing or expanding on each other's core concepts. They show thematic consistency across your reading.
A feature that helps you find books that bridge gaps between two or more books in your library. Given a selection of books, Gap Finder uses AI to suggest books that would create logical bridges between them, helping you deepen your understanding of connected topics.
A visualization mode that shows your books arranged chronologically by when you added them to Hikara, sorted by reading status (Read → Reading → Want to Read). Animated gradient edges show the flow of your reading journey through time, helping you visualize your intellectual progression.
An interactive network visualization where books are represented as nodes (points) and connections between them are represented as edges (lines). The knowledge graph gives you a bird's-eye view of your reading life, showing how ideas, themes, and authors connect across your entire library.
A system for capturing, organizing, and connecting information and ideas from various sources to facilitate learning and create new knowledge. Hikara's knowledge graph is a powerful PKM tool, helping you organize and synthesize insights from your reading.
The analysis of data about your reading habits beyond simple page counts. Hikara's analytics track themes, connection types, reading status, ratings, and insights about your intellectual interests, helping you understand your reading patterns more deeply.
A visualization that shows the distribution of themes across your reading library. Heatmaps reveal which intellectual domains you explore most frequently and which areas might benefit from further reading. They help identify patterns and gaps in your knowledge.
A specific instance of a book in your personal library, separate from the book's metadata. A user book includes your personal information: reading status (Want to Read, Reading, Read), rating, notes, and reading progress. Multiple users can have the same book with different personal data.
An AI-powered semantic search feature that lets you find books based on mood, feeling, or atmosphere rather than keywords or genres. You can search for things like 'cozy mystery' or 'intense philosophical exploration', and Hikara will surface books that match that vibe.
Start building your personal book knowledge graph and discover how your books connect.