Abstract: Disclosed a plant-derived exosome as well as a preparation method and an application thereof in preparation of drugs or scaffolds for animal tissue regeneration therapy. The preparation method includes: soaking and infiltrating any part of a natural plant with a 2-(N-morpholine) ethanesulfonic acid buffer solution; removing a supernatant; collecting a wet treated sample; refrigerating, centrifuging and extracting the sample to obtain apoplastic fluid, wherein the soaking and infiltrating method is as follows: vacuum supply is performed within 6-24 h after soaking for 2-5 times, vacuum supply time is independently 5-15 s each time, and interval time between two adjacent times of vacuum supply is independently 10 s-1 min; and centrifuging the apoplastic fluid at an ultra-high speed to obtain the plant-derived exosome, wherein ultra-high speed centrifugation conditions are as follows: centrifugal force is not lower than 100000 g, centrifugation time is 1-7 h, and a temperature is 0-4° C.

Abstract: A speech recognition method and related products are provided. The method includes acquiring a to-be-recognized speech and a configured hot word library; determining, based on the to-be-recognized speech and the hot word library, an audio-related feature used at a current decoding time instant; determining, based on the audio-related feature, a hot word-related feature used at the current decoding time instant from the hot word library; and determining, based on the audio-related feature and the hot word-related feature, a recognition result of the to-be-recognized speech at the current decoding time instant.

Abstract: A speech recognition method and related products are provided. The method includes acquiring text contents and text-associated time information transmitted by a plurality of terminals in a preset scenario and determining a shared text for the preset scenario based on the text contents and the text-associated time information, obtaining a customized language model for the preset scenario based on the shared text, and performing speech recognition for the preset scenario with the customized language model. The method provides improved speech recognition for the preset scenario due to the correlation between the customized language model and the preset scenario.

Abstract: A method for constructing a decoding network, a speech recognition method, a device, an apparatus, and a storage medium are provided. The method for constructing a decoding network includes: acquiring a general language model, a domain language model, and a general decoding network generated based on the general language model; generating a domain decoding network based on the domain language model and the general language model; and integrating the domain decoding network with the general decoding network to obtain a target decoding network. The speech recognition method includes: decoding to-be-recognized speech data by using a target decoding network to obtain a decoding path for the to-be-recognized speech data; and determining a speech recognition result for the to-be-recognized speech data based on the decoding path for the to-be-recognized speech data.

Abstract: Disclosed a plant-derived exosome as well as a preparation method and an application thereof in preparation of drugs or scaffolds for animal tissue regeneration therapy. The preparation method includes: soaking and infiltrating any part of a natural plant with a 2-(N-morpholine) ethanesulfonic acid buffer solution; removing a supernatant; collecting a wet treated sample; refrigerating, centrifuging and extracting the sample to obtain apoplastic fluid, wherein the soaking and infiltrating method is as follows: vacuum supply is performed within 6-24 h after soaking for 2-5 times, vacuum supply time is independently 5-15 s each time, and interval time between two adjacent times of vacuum supply is independently 10 s-1 min; and centrifuging the apoplastic fluid at an ultra-high speed to obtain the plant-derived exosome, wherein ultra-high speed centrifugation conditions are as follows: centrifugal force is not lower than 100000 g, centrifugation time is 1-7 h, and a temperature is 0-4° C.