The condensed version of Liberation Daily was first published in Shanghai during the Yan'an period
This afternoon, the inaugural ceremony of the condensed edition of the Liberation Daily during the Yan'an period and the symposium on the distribution of the Liberation Daily in 2024 were held. At the meeting, the Liberation Daily and Hunan Qingapple Data Center Co., Ltd. jointly presented a condensed version of the Liberation Daily from the Yan'an period to the Shanghai Library and the School of Journalism at Fudan University.
Jiefang Daily in Yan'an period is the organ newspaper of the Central Committee of the CPC. It was founded on May 16, 1941, and stopped publication when the Central Committee of the Communist Party of China moved to northern Shaanxi on March 27, 1947. It lasted five years, 10 months and 11 days, and published a total of 2130 issues. It has great historical significance and research value. It is an important material for studying the early propaganda work and political theory of the CPC. In particular, Comrade Mao Zedong's guidance on the revision of Jiefang Daily and the top-level design of newspaper running thoughts still have great practical significance.
![The condensed version of Liberation Daily was first published in Shanghai during the Yan'an period](https://a5qu.com/upload/images/c2cf319e9ebed3baa19572b3e178ab6f.jpg)
The only existing edition of the Liberation Daily during the Yan'an period, which was photocopied and published by the People's Publishing House in 1954, not only had problems with paper aging, yellowing and moldy, insect damage, etc., but also had poor quality of the original newspaper printed on Malan paper back then, resulting in a reduction of half during photocopying. Therefore, today, only a rough overview of the page can be seen, and large areas of handwriting cannot be clearly distinguished. Researchers are hesitant to cite valuable revolutionary historical documents due to difficulties in analysis, which limits their widespread dissemination.
On the eve of the liberation of Shanghai in 1949, the Central Committee of the Communist Party of China decided to submit the registration for the Liberation Daily to Shanghai as the official newspaper of the East China Bureau of the Communist Party of China Central Committee and the Shanghai Municipal Committee of the Communist Party of China. Therefore, Shanghai has a responsibility and obligation to restore, protect, and promote this precious revolutionary historical document. In 2021, the Liberation Daily and Green Apple Company collaborated to launch the "Revolutionary Cultural Relics - Yan'an Liberation Daily Reconstruction and Publishing Project".
![The condensed version of Liberation Daily was first published in Shanghai during the Yan'an period](https://a5qu.com/upload/images/dc09468dd17ec3295842b6732c81d4b2.jpg)
Due to the special printing environment during the war era, the printing quality of newspapers was poor, and the handwriting was blurry. Most of the printed materials could not be recognized, making text recognition difficult. The recognition rate of using existing recognition technologies to convert newspaper images into full-text retrievable text was only 30% -40%.
Inside page of the condensed edition of the Liberation Daily during the Yan'an period
![The condensed version of Liberation Daily was first published in Shanghai during the Yan'an period](https://a5qu.com/upload/images/ea8128f1e5c107e118c882d391f2b506.jpg)
"The innovative technology of this project lies in combining convolutional neural network technology with collecting text sample sets. Firstly, the convolutional neural network parameters obtained from training modern printed traditional Chinese character samples are used, followed by transfer learning from the actual lead type sample set collected from the newspaper" Liberation Daily "during the Yan'an period. Finally, a Chinese character recognition model suitable for the" Liberation Daily "during the Yan'an period is obtained, which is used to achieve accurate recognition of newspaper layout." Tang Wuyi, President of Qingapple Company, said that based on the above method, the project team analyzes, recognizes, and understands the layout of the "Liberation Daily" during the Yan'an period, and finally automatically and accurately reconstructs it into a high simulation standard format electronic publication in its original form. The average recognition rate can be improved on the original basis. Improved by over 36%, while also recognizing font, size, position, line spacing, spacing, and other layout information.
Reconstruction of Vector Digital Newspaper Files in the Layout of Liberation Daily during the Yan'an Period
![The condensed version of Liberation Daily was first published in Shanghai during the Yan'an period](https://a5qu.com/upload/images/564562d6e4512e755a804c70d4704338.jpg)
The condensed version of the Liberation Daily during the Yan'an period, which was reconstructed through a project, was published and distributed by Shanghai Sanlian Bookstore. The layout style remains the same as the original newspaper, with complete and accurate content and clear and distinguishable text. After inspection, the text error rate is less than 0.3%, meeting the quality requirements of national newspaper publishing. The project team also produced an electronic version of Yan'an Liberation Daily, which retained the scanned original image layout files and highly simulated digital layout files, equipped with a digital magnifying glass for easy viewing by readers and researchers; According to the national standard for news classification, detailed indexing and classification were conducted on the full text data of the Liberation Daily during the Yan'an period, making it easy to operate and use, with accurate and fast retrieval, achieving a recall rate of 100% and a precision rate of 98%.
The electronic database interface of the Liberation Daily during the Yan'an period
![The condensed version of Liberation Daily was first published in Shanghai during the Yan'an period](https://a5qu.com/upload/images/d1ad0cee5785e91815fc97681cd56d9d.jpg)
The successful reconstruction of the Liberation Daily during the Yan'an period verified the feasibility of related technologies, which has important application and promotion value for innovating the digital technology of ancient Chinese literature, promoting the development and utilization of precious literature resources.