Multi-codebook quantization (MCQ) is the task of expressing a set of vectors as accurately as possible in terms of discrete entries in multiple bases. Work in MCQ is heavily focused on lowering...doi:10.1007/978
主要是基于最近在视觉中提出的RQ-VAE,将残差矢量量化(residual vector quantization,RVQ)应用于细化多分布表征,然后将多分布表征用于多任务模型中的gate权重计算,从而将多分布的信息引入模型中 初始化一个codebook(码本)C,如图1所示,假设残差深度为D(计算D次)则最终可以得到D个emb,残差计算过程如下,即每一轮基于当...
First, we carried out a vector quantization of the volumetric data set using five vectors. Then the crystal structure was partitioned with an equal number of codebook vectors, and the Voronoi cells were computed. Next, the centroids of the high-resolution Voronoi cells were forced to coincide ...
the codebook collapse issue by proposing group-multi-level vector quantization, further improving synthesized speech quality. Although these models can generate high-quality synthesized speech, they have a large number of parameters and high storage and computational complexity....
inverted multi-index 是一种对大规模高维数据就行相似性检索的数据结构,它将 inverted index 和 product quantization 结合起来。inverted index 的目的是快速地获取距离查询最近的向量,inverted multi-index …
The adaptive codebook quantization is similar to a closed-loop long-term prediction filter if the predictor delay is more than one frame length. The performance of the adaptive codebook procedure is improved by extending its codebook to include candidate vectors constructed from past synthetic ...
At bit rates of 4 kbps and below, conventional time-domain algorithms such as CELP fail to retain high voice quality and robust performance against background noise as their waveform-matching ability is curtailed by the severely limited codebook space. Spectral coding, on the other hand, offers ...
The quantization codebook at the relay is given by CQ={ΛcQ∩VQ}, where ΛQ⊆ΛcQ are nested lattices of dimension n and ΛcQ is Rogers-good and Λ Q is Poltyrev-good. We choose σ2(ΛcQ)=D and σ2(ΛQ)=1+D+g2(K−1)LP1+(K−1)LP. The compression rate is thus RQ...
The support for up to eight transmit antennas has a great impact in the codebook design for closed-loop operation. The size of the codebook is large, so the terminal will need to determine the preferred precoding matrix index (PMI) among a large number of them, and the required calculation...
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