The phrase "a first stage for" is correct and usable in written English.
It can be used to indicate an initial phase or step in a process or development that leads to something further.
Example: "This project serves as a first stage for the larger initiative we plan to implement next year."
Alternatives: "an initial phase for" or "a preliminary step for".
We achieve this by implementing a first stage for audio context recognition and event set selection.
Bacteraemia is a first stage for patients risking conditions such as septic shock.
We have used cotagging in a first stage, for automated crawling topic discovery, and thus build a consistent set of tags for a given topic.
At a first stage, for each of the 216 cases, 100 models based on different types of neural networks were built using data corresponding to year 2000.
Experiment 9 was also used as a first stage for the next experiment, so that the rats could first be trained to discriminate the very same spatial cues that would help solve the final biconditional task (Experiment 10).
This study comprised a first stage for dose-finding with dose selection after 14 days of treatment, and a second stage evaluating efficacy and safety during 26 weeks of treatment.
(In a four-star review, Michael Billington wrote that she "captures both Blanche's airy pretensions to grandeur and her desolate loneliness". The Young Vic considers its short films to be a "fourth stage" for the theatre. They have been watched by more than 300,000 people since 2012.
In steel which also contains carbon and manganese a second stage for long isothermal annealings was observed and was attributed to manganese enrichment of iron carbides.
In a second stage, for ion doses up to ~ 5 6 × 1016 ions/cm2, subtoichiometric nitride species are completely transformed into stoichiometric nitride species.
Savarese et al.[4] proposed an incremental and anchor-based localization algorithm that uses a two-phase approach, including an initial position estimation stage and a second stage for position refinement using trilateration.
To exploit the correlation of direction information between the neighboring blocks [29], a check is performed, at a second stage, for additional most probable modes (MPMs) that are derived from neighbors.
