Wrong head of sections extracted #865
Description
Case:
[2108.04818] A Graph Approach to Simulate Twitter Activities with Hawkes Processes
Expect:
1 INTRODUCTION
2 HAWKES PROCESS
2.1 Model description and implementation
2.2 Complexity Analysis
3 APPLICATION: RARE EVENT SIMULATION
3.1 Importance Sampling
3.2 How to implement on Hawkes Process
4 LIMITATIONS OF THE TRADITIONAL APPROACH
5 GRAPH MODEL
5.1 Model Definition
5.2 Implementation Specifics
6 CHALLENGES AND FUTURE WORK
7 CONCLUSION
Result:
```xml
<head coords="1,53.80,362.27,81.02,9.37">CCS CONCEPTS</head>
<head n="2" coords="1,317.96,583.44,114.21,9.37;1,317.96,599.13,218.08,9.37">HAWKES PROCESS 2.1 Model description and implementation</head>
<head n="2.2" coords="2,317.96,496.77,128.64,9.37">Complexity Analysis</head>
<head n="3" coords="2,317.96,632.00,236.48,9.37">APPLICATION: RARE EVENT SIMULATION</head>
<head n="3.1" coords="3,317.96,143.23,131.63,9.37">Importance Sampling</head>
<head n="3.2" coords="4,53.80,120.34,215.41,9.37">How to implement on Hawkes Process</head>
<head n="4" coords="4,317.96,542.34,209.33,9.37;4,334.07,555.29,61.24,9.37">LIMITATIONS OF THE TRADITIONAL APPROACH</head>
<head n="5" coords="5,53.80,251.22,97.44,9.37;5,53.80,266.91,109.12,9.37">GRAPH MODEL 5.1 Model Definition</head>
<head n="5.2" coords="5,317.96,366.40,150.55,9.37">Implementation Specifics</head>
<head n="6" coords="5,317.96,642.96,200.44,9.37">CHALLENGES AND FUTURE WORK</head>
<head n="7" coords="6,53.80,400.09,87.77,9.37">CONCLUSION</head>