11. A non-transitory computer-readable storage medium storing a computer program, the computer program comprising: program instructions for defining a plurality of candidates based on a seed s; program instructions for calculating, for each candidate d, scores for relevance, novelty, connection clarity, and transition smoothness, wherein the score for connection clarity is based on a relevance score of an intersection between the seed and each candidate, wherein the score for transition smoothness measures an interest in reading each candidate when transitioning from the seed to each candidate; program instructions for calculating, for each candidate, a relatedness score based on the calculated scores for relevance, novelty, connection clarity, and transition smoothness; and program instructions for selecting at least one candidate from the plurality of candidates based on the relatedness scores.
11. A non-transitory computer-readable storage medium storing a computer program, the computer program comprising: program instructions for defining a plurality of candidates based on a seed s; program instructions for calculating, for each candidate d, scores for relevance, novelty, connection clarity, and transition smoothness, wherein the score for connection clarity is based on a relevance score of an intersection between the seed and each candidate, wherein the score for transition smoothness measures an interest in reading each candidate when transitioning from the seed to each candidate; program instructions for calculating, for each candidate, a relatedness score based on the calculated scores for relevance, novelty, connection clarity, and transition smoothness; and program instructions for selecting at least one candidate from the plurality of candidates based on the relatedness scores. 15. The non-transitory computer-readable storage medium as recited in claim 11 , wherein the score for connection clarity is further based on topic distributions of the seed and each candidate.