data_ai_firm

The data contain a sample of 947,253 vacancies from HeadHunter database covering 2015-2021 period. Each row represents one vacancy. The columns descriptions are the following: <em>firm</em> - the firm identifier that published a vacancy; <em>occupation</em> - the first mentioned occupation code in a vacancy according to HeadHunter classification (https://api.hh.ru/specializations); <em>year_mon</em> - year and month of vacancy published date; columns from <em>ai</em> to <em>data - </em>binary variables (skill groups) indicating the inclusion of specified skills into a particular skill group (according to Deming, D., &amp; Noray, K. (2020). Earnings dynamics, changing job skills, and STEM careers. <em>The Quarterly Journal of Economics</em>, <em>135</em>(4),1965–2005); <em>wage</em> - monthly wage suggested in a vacancy (in Rubles); <em>region</em> - the integer indicator of a vacancy posting region (Russian community zone) according to HeadHuter platform; <em>firm_size</em> - firm size 5-level categorical variable indicating the number of workers: "micro", 1–15 workers; "small", 16–100 workers; "medium", 101–250 workers; "large", 251–1,000 workers; "huge", more than 1,000 workers; <em>industry</em> - firm industry code according to Russian Classification of Economic Activities (OKVED); <em>firm_ai</em> - the measure of the AI skills demand (calculated based on Alekseeva, L., Azar, J., Gine, M., Samila, S., &amp; Taska, B. (2021). The demand for AI skills in the labor market. <em>Labour Economics</em>, <em>71</em>, 102002).

本数据集包含来自HeadHunter数据库的947,253条招聘启事样本，时间跨度为2015年至2021年。每条数据对应一则招聘启事。各字段说明如下：
<em>firm</em>：发布招聘启事的企业标识符；
<em>occupation</em>：根据HeadHunter招聘平台的职业分类标准，招聘启事中首次提及的职业代码，分类标准详见：https://api.hh.ru/specializations；
<em>year_mon</em>：招聘启事发布的年与月份；
<em>ai</em>至<em>data</em>：二分类变量（技能组），用于标识指定技能是否归入某一特定技能组（依据：Deming, D. & Noray, K. (2020). 收入动态、岗位技能变迁与科学、技术、工程与数学（STEM）职业. 《经济学季刊》（*The Quarterly Journal of Economics*）, 135(4), 1965–2005）；
<em>wage</em>：招聘启事中标注的月工资（单位：俄罗斯卢布）；
<em>region</em>：根据HeadHunter招聘平台的划分标准，招聘启事发布地区的整数编码（对应俄罗斯境内区域）；
<em>firm_size</em>：企业规模的5分类类别变量，依据雇员数量划分，具体为：微型企业（micro，1~15名雇员）、小型企业（small，16~100名雇员）、中型企业（medium，101~250名雇员）、大型企业（large，251~1000名雇员）、特大型企业（huge，1000名以上雇员）；
<em>industry</em>：依据俄罗斯经济活动分类标准（OKVED）划分的企业行业代码；
<em>firm_ai</em>：人工智能（AI）技能需求的衡量指标，计算依据：Alekseeva, L., Azar, J., Gine, M., Samila, S. & Taska, B. (2021). 劳动力市场中的人工智能技能需求. 《劳动经济学》（*Labour Economics*）, 71, 102002。