The authors propose a method of consistency check for Chinese word segmentation based on contextual similarity. First, the classification constraints based on word formation, part of speech and dependency syntax are designed by using the features of morphology and syntax. Then, the semantic information of the context in which the inconsistent strings are located is encoded by using pretrained word embeddings, and the inconsistent strings are classified by semantic similarity between contexts. Experimental results show that proposed method can effectively improve the accuracy of consistency check for Chinese word segmentation. Further, three mainstream Chinese word segmentation models are used to re-implement in the revised Chinese word segmentation corpus. The result shows that proposed method can effectively improve the quality of Chinese word segmentation corpus, and the F1 scores of three Chinese word segmentation models are improved by 1.18%, 1.25% and 1.04% respectively.

LA-ICP-MS zircon U-Pb isotopic analyses reveal that the granitoid intrusions of Zhongchuan, Baijiazhuang and Jiaochangba in Western Qinling orogeny emplaced at ages of 220±1, 216±6 and 222±6 Ma, respectively, showing that all of them belongs to Middle-Late Triassic granitoid magmatism. Whole rock geochemistry analyses indicate that the primitive mantle-normalized trace element patterns and Chondrite-normalized REE patterns of the rock samples from the three intrusions show significant similarity, for example, depletion in high field strength elements of Nb, Ti and P, and enrichment in LREE. Analyses for zircon Lu-Hf isotopes indicate that the ε_Hf(t) values range from ?3.31 to +1.68 of the three intrusions with the two-stage model ages between 1151 and 1456 Ma. Petrogenetic studies indicate that the granitoid magmas of these Indosinian granitoid intrusions were derived mainly from the partial melting of mesoproterozoic crust material. Combined with the formation age, petrogenesis and tectonic background, these Indosinian intrusions were most likely formed in the collision process between South Qinling orogen and South China Block along Mianlue suture zone, and might be related to the subducted slab break off of South China Block.