Valency

About: Valency is a research topic. Over the lifetime, 1632 publications have been published within this topic receiving 26141 citations.

Learning Embeddings for Transitive Verb Disambiguation by Implicit Tensor Factorization

Abstract: We present an implicit tensor factorization method for learning the embeddings of transitive verb phrases. Unlike the implicit matrix factorization methods recently proposed for learning word embeddings, our method directly models the interaction between predicates and their two arguments, and learns verb phrase embeddings. By representing transitive verbs as matrices, our method captures multiple meanings of transitive verbs and disambiguates them taking their arguments into account. We evaluate our method on a widely-used verb disambiguation task and three phrase similarity tasks. On the disambiguation task, our method outperforms previous state-ofthe-art methods. Our experimental results also show that adjuncts provide useful information in learning the meanings of verb phrases.

The use of a segmented tool for the analysis of electrochemical machining

Abstract: A planar workpiece/planar segmented tool experimental configuration has been used to collect current–time data for the electrochemical machining (ECM) of Inconel 718 (In718) and stainless steel (SS316). As with previous measurements, theoretical analysis of the chronoamperometric data has been used to obtain values for the characteristic parameters of ECM under characteristic machining conditions, but the segmented tool allows this for each segment. These parameters are the valency, n, and k, from which the minimum voltage required to initiate machining, V 0, and the electrolyte conductivity, κ can be obtained. The variation of n, V 0 and κ between segments enables ECM conditions along the flow path length to be probed. Measurements on In718 in nitrate electrolyte have shown a small increase in electrolyte conductivity along the flow path. Tool segments which overlap the workpiece ends have been employed to measure edge effects in the ECM process; no significant edge effects were found when machining In718 in nitrate. The temporal and spatial dependences of a change in valency previously observed during the machining of SS316 have also been studied for the first time. Regions of low valency (n = 2.1) dissolution (downstream) and high valency (upstream, n = 3.0) dissolution were observed, with an intermediate region with monotonically decreasing valency where 3.0 > n > 2.1.