Normalized Learning

Let Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle d_{u_{i}}} denote the degree of the user Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle u_{i}} ,and Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle d_{t_{p}}} represent the degree of tag Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t_{p}} in a user-tag network. their cosine similarity can be rewritten as: Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle S_{e}\left ( e,{e}' \right )= \frac{d_{t_{p}}d_{t_{q}}\delta \left ( u_{i},u_{j} \right )+d_{u_{i}}d_{u_{j}}\delta \left ( t_{p},t_{q} \right )}{\sqrt{d_{u_{i}}^{2}+d_{t_{p}}^{2}}\sqrt{d_{u_{j}}^{2}+d_{t_{q}}^{2}}}}