|
|
Search in speech recordings based on semantic vectors
Boboš, Dominik ; Karafiát, Martin (oponent) ; Schwarz, Petr (vedoucí práce)
In the current era of information overload, efficient methods for information retrieval are crucial. This thesis summarises methods for obtaining vector representations for text and audio, also known as semantic vectors. We took a deeper look at joint-representation models such as SpeechT5 and SeamlessM4T, which transform these various forms of input into one shared vector space. Based on these models, we built a system which allows us to search in data regardless of the modality. In order to evaluate the proposed solution on semantic search tasks, apart from standard keyword spotting tasks, we labelled a dataset to capture similar semantic meanings of the keywords or phrases. Finally, we conducted several experiments, where we explored the possibilities of the models used by limiting the context seen during finetuning or involving text-to-speech (TTS) systems to improve overall performance.
|
|
|
Analysis of the development direction of a conceptual academic library resource sharing service based on a case study of DXY
Niu, Xiaofei ; Zhang, Ling ; Han, Li
Under a global environment characterized by open and complex information, academic library resource-sharing practitioners should observe the information-service market beyond a “library-oriented” setting and rethink the development direction of the service. To investigate this issue, this paper presents an analysis of the development trajectory and characteristics of DXY, a Chinese information service enterprise. This study also discusses the development of academic library resource-sharing service from three dimensions, namely, service targets, service contents, and service roles. Findings show that the academic library resource-sharing practitioners should break through the traditional cognitive framework of “academic users on campus” and “document providers,” and furthermore, consider upgrading the service to assume a comprehensive role as information sharer, information connector, and platform operator simultaneously. This change will enable the move toward a knowledge service orientation.
Plný text:  PDF
|
host ::
RSS.