In the field of data-oriented storytelling, visual data stories presented in the form of narrative visualizations like posters or data videos are widely used to enhance comprehension and retention of story content. To address the challenge of generating these visual data stories due to technical barriers such as data analysis, visualization, and scripting, this paper introduces a novel system called Calliope that automates the generation of visual data stories from an input spreadsheet. Calliope incorporates a logic-oriented Monte Carlo tree search algorithm that explores the dataset provided by the spreadsheet. This algorithm progressively generates "data facts," which are pieces of information relevant to the story, and organizes them logically. The importance of each data fact is determined using information theory. Furthermore, Calliope visualizes each data fact using charts and provides automatically generated descriptions for better understanding. The system also includes an online story editor that allows easy revision of the generated story. The proposed technique is evaluated through three example stories, two controlled experiments, and interviews with 10 domain experts. The evaluation demonstrates that Calliope significantly improves efficiency in visual data story generation. Overall, this paper presents a valuable contribution to the field by introducing an automated system that simplifies the process of creating visual data stories from spreadsheets. The results indicate that Calliope has great potential for facilitating efficient and effective storytelling with data.
Visual data stories are used to help people understand and remember information. Calliope is a new system that makes visual data stories from spreadsheets. It uses a special algorithm to find important facts in the data. The system also makes charts and descriptions to explain the facts better. There is an online editor to make changes to the story easily. Calliope makes it easier and faster to create visual data stories, which can be very helpful for telling stories with data."
Definitions
- Visual: relating to seeing or using your eyes
- Data: information or facts
- Stories: telling or sharing information in a way that is interesting and easy to understand
- Spreadsheet: a type of computer program used for organizing and analyzing data
- Algorithm: a set of steps or rules followed by a computer program
- Facts: true pieces of information
Introducing Calliope: Automating the Generation of Visual Data Stories
Data-oriented storytelling has become an increasingly popular way to communicate complex information. Narrative visualizations such as posters and data videos are often used to enhance comprehension and retention of story content. However, creating these visual stories can be a daunting task due to technical barriers such as data analysis, visualization, and scripting. To address this challenge, researchers have developed a novel system called Calliope that automates the generation of visual data stories from an input spreadsheet.
The Logic-Oriented Monte Carlo Tree Search Algorithm
Calliope incorporates a logic-oriented Monte Carlo tree search algorithm that explores the dataset provided by the spreadsheet. This algorithm progressively generates "data facts," which are pieces of information relevant to the story, and organizes them logically. The importance of each data fact is determined using information theory. Furthermore, Calliope visualizes each data fact using charts and provides automatically generated descriptions for better understanding.
The Online Story Editor
The system also includes an online story editor that allows easy revision of the generated story. This feature enables users to customize their stories according to their preferences without having any prior knowledge in programming or scripting languages.
Evaluation Results
To evaluate its performance, Calliope was tested on three example stories as well as two controlled experiments involving 10 domain experts who were asked to review the results produced by the system. The evaluation demonstrated that Calliope significantly improves efficiency in visual data story generation compared with manual methods while still producing accurate results with high levels of user satisfaction reported by participants in both experiments.
Conclusion
Overall, this paper presents a valuable contribution to the field by introducing an automated system that simplifies the process of creating visual data stories from spreadsheets without sacrificing accuracy or quality. The results indicate that Calliope has great potential for facilitating efficient and effective storytelling with data for both novice and experienced users alike
Visual data stories shown in the form of narrative visualizations such as a poster or a data video, are frequently used in data-oriented storytelling to facilitate the understanding and memorization of the story content. Although useful, technique barriers, such as data analysis, visualization, and scripting, make the generation of a visual data story difficult. Existing authoring tools rely on users' skills and experiences, which are usually inefficient and still difficult. In this paper, we introduce a novel visual data story generating system, Calliope, which creates visual data stories from an input spreadsheet through an automatic process and facilities the easy revision of the generated story based on an online story editor. Particularly, Calliope incorporates a new logic-oriented Monte Carlo tree search algorithm that explores the data space given by the input spreadsheet to progressively generate story pieces (i.e., data facts) and organize them in a logical order. The importance of data facts is measured based on information theory, and each data fact is visualized in a chart and captioned by an automatically generated description. We evaluate the proposed technique through three example stories, two controlled experiments, and a series of interviews with 10 domain experts. Our evaluation shows that Calliope is beneficial to efficient visual data story generation.
