设有两条英文题名(暂把题名当作全文): China's achievements in ensuring food security Ukraine crisis threat to global food security 请完成以下任务(权重词频次,相关性用欧氏距高法): (1)构建文献-语词矩阵。 (2)能否以此为根据判断两篇文章间是否存在抄袭行为?用经典概率模型能否回答这个问题

时间: 2023-04-07 22:05:12 浏览: 75
我可以回答这个问题。首先,构建文献-语词矩阵需要将两篇文章中的所有单词提取出来,并统计每个单词在每篇文章中出现的频率。然后,将这些单词作为矩阵的列,将两篇文章作为矩阵的行,矩阵中每个元素表示该单词在该篇文章中出现的频率。 其次,可以使用欧氏距离高法来计算两篇文章之间的相关性。欧氏距离是一种常用的距离度量方法,可以用来衡量两个向量之间的相似度。在这里,我们可以将两篇文章的文献-语词矩阵看作两个向量,然后计算它们之间的欧氏距离。如果距离越小,说明两篇文章之间的相关性越高,反之则越低。 但是,仅仅通过文献-语词矩阵和欧氏距离高法是无法判断两篇文章之间是否存在抄袭行为的。因为两篇文章可能存在相同的单词和短语,但并不一定是抄袭的结果。因此,需要结合其他的方法和技术,如文本相似度算法、语义分析等,才能更准确地判断两篇文章之间是否存在抄袭行为。
相关问题

二、 设有两条英文题名(暂把题名当作全文): China’s achievements in ensuring food security Ukraine crisis threat to global food security;如何用经典概率模型判断两篇文章间是否存在抄袭行为

这个问题可以回答。可以使用文本相似度算法来判断两篇文章是否存在抄袭行为。常用的算法包括余弦相似度、Jaccard相似度等。可以将两篇文章转化为向量形式,然后计算它们之间的相似度。如果相似度超过一定的阈值,就可以判断存在抄袭行为。

设有两条英文题名(暂把题名当作全文): China's achievements in ensuring food security Ukraine crisis threat to global food security 请完成以下任务(权重词频次,相关性用欧氏距离法):能否以此为根据判断两篇文章间是否存在抄袭行为?能否用经典概率论模型回答这个问题?怎么做

我可以使用权重词频次和欧氏距离法来判断两篇文章间是否存在抄袭行为。通过比较两篇文章中相同的单词和短语的频率和位置,可以计算它们之间的相似度。如果相似度非常高,那么就可能存在抄袭行为。 经典概率论模型可以用来回答这个问题。我们可以使用贝叶斯定理来计算两篇文章之间的相似度。具体来说,我们可以将两篇文章看作是两个事件,然后使用贝叶斯定理来计算它们之间的条件概率。如果条件概率非常高,那么就可能存在抄袭行为。 要进行这个任务,我们需要先将两篇文章转换成数字向量,然后计算它们之间的欧氏距离。如果欧氏距离非常小,那么就说明两篇文章非常相似,可能存在抄袭行为。然后,我们可以使用贝叶斯定理来计算它们之间的条件概率,以确定是否存在抄袭行为。

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Shifts in China’s Rural and Urban Population: 2000-2020 The bar chart clearly reveals that from 2000 to 2020, while the total population in China increased moderately from 1.25 billion to 1.41 billion, population in urban and rural areas experienced dramatic shifts in different directions. Urban population rose from 450 million in 2000 to 670 million in 2010 and 900 million in 2020; contrastingly, rural population declined from 800 million in 2000 to 680 million in 2010 and 510 million in 2020. The population gap narrowed largely because of the joint effects of urbanization, unequal economic opportunities in rural and urban areas, and the expansion of higher education. In the first place, there was a large-scale urban sprawl during this period. Places which had been part of the vast countryside were incorporated into cities, causing hundreds of millions of rural dwellers to be passively transformed into urban residents. What’s more, while urban living standards improved greatly in these years, few economic opportunities fell on rural areas and most peasant families remained at the poverty line. Poverty prompted the call for change, leading a large quantity of healthy young peasants to leave their hometowns and flock to cities for a better living. Last but not least, China’s higher education grew at an unprecedented rate in these years. More high school graduates than ever before entered colleges and universities, most of whom preferred to stay in urban areas after graduation for personal development. The increase in urban population was a sure indication of economic and educational achievements in China. It benefited the country in many aspects, relieving the shortage of labor force in cities, lessening the burden of peasants to support their families, and affording young people from rural areas more opportunities to display their talents. However, the migration of rural residents into urban areas inevitably brought about disadvantages. Some of them, such as waste of arable land and left-behind children in the countryside, as well as traffic congestion and soaring housing prices in cities, have already called the attention of the government and corresponding measures have begun to take effect. But others, especially the inability of many peasants to integrate into urban life due to their lack of education and civilized habits, have long been neglected. In this sense, we cannot be satisfied with the superficially optimistic figures in the chart, but should endeavor to foster the integration of these newcomers by providing them with adequate assistance in educational and cultural aspects, so that they can find easier access to the prosperity and convenience of urban life and be more fully devoted to the development of cities.翻译成英文版两百单词左右的文章

润色:In the recent years, the world is constantly stricken by various terrifying natural or man-made disasters, all of which calls on our attention to the global sustainable development, defined as the overall coordinating development of nature, society and economy, to meet the current needs without at the cost of the future.\\ Back in 2015, UN Assembly has stipulated the 2030 Agenda for Sustainable Development to address the problem including 17 goals which can be further classified into 5 categories: \textbf{fundamental necessities pursuit} (GOAL 1, 2), \textbf{sustainable social development} (GOAL 3, 4, 5, 6, 7), \textbf{sustainable economic development} (GOAL 8, 9, 10, 11, 12),\textbf{ sustainable ecological development} (GOAL 13, 14, 15) and \textbf{human symbiont pursuit} (GOAL 16, 17). In the article, we mainly discuss the relationships between the SDGs, the priority ranking of SDGs, base on which future implications are given including predicted blue print, ideal achievements and potential goals. Finally the influence of external factors on the structure is researched. In consideration of the priority of each SDG, the point weight is given to each SDG itself, and the edge weight is given to the degree of correlation between SDGs (that is, the degree of influence), to represent the degree of contribution of each SDG to the human-wellbeing. By final calculation, Goal 5,2,1 rank the top3.\\ In future implication, the sliding window model is employed. The predicted blue-print in 10 years is given qualitively and quantitively, and for the ideal achievements we find that fundamental necessities pursuit has a huge impact on the other goals, while human symbiont pursuit influence gradually and sustainable economic development has a general impact too.

优化这条sql 解决bug select a.*,rownum num from ( SELECT t.PROJ_ID,t.PROJ_CODE,t.PROJ_NAME,t.CLIENT_CODE,t.CLIENT_NAME,t.SPEC_CODE,t.SPEC_NAME,t.BUS_UNIT_CODE,t.BUS_UNIT,t.PROJ_DEP_CODE,t.PROJ_DEP,t.PROJECT_MANAGER_CODE,t.PROJECT_MANAGER,t.PROJECT_DEP_MANAGER_CODE,t.PROJECT_DEP_MANAGER,t.IS_SUB_PROJ,t.SUB_PROJ_TYPE_CODE,t.SUB_PROJ_TYPE,t.PARENT_CODE,t.PROJ_GROSS,t.CLIENT_AREA_CODE,t.CLIENT_AREA,t.CLIENT_TYPE_FULL_PATH_CODE,t.CLIENT_TYPE_PULL_PATH,t.BUSINESS_TYPE_CODE,t.BUSINESS_TYPE,t.BUSINESS_LEVEL_CODE,t.BUSINESS_LEVEL,t.BUSINESS_AREA_CODE,t.BUSINESS_AREA_NAME,t.IS_CLOSE,t.IS_IN_COO,t.TAX_RATE,t.IS_AUTHORIZED,t.AUTHORIZED_AMOUNT,t.IS_VIRTUAL,t.INCOME_BUDGET,t.EXPENDITURE_BUDGET,t.P_VALUE,t.CREATE_TIME,t.P_BUD_VALUE,t.P1_BUD_VALUE,t.P2_BUD_VALUE,t.ORG_CODE,t.ORG_NAME,t.PROD_RES_TYPE,t.IS_TECH_COO,t.COO_UNIT_RATIO,t.PROJ_ACHIEVEMENTS_BUD,t.REIMBURSEMENT_COST_BUD,t.COO_COST_BUD,t.MATERIAL_COST_BUD,t.PERFORMANCE_PERCENT,t.SCHE_START_TIME,t.SCHE_END_TIME,t.PROJECT_ACCOUNT_CODE,t.CUSTOMER_TYPE_CODE,t.CUSTOMER_TYPE,t.IS_PURE_OUT_PROJ,t.PROJECT_CREATE_TIME,t.IS_RELATE,t.IS_QUOTA,t.MAIN_PROJECT_CODE,t.PROJ_STATUS,t.IS_LARGE_PROJECT,t.MARKET_DIS_COUNT_RATE,t.PROJECT_CAT,t.MGR_PER_FORMANCE_RATIO,t.P1_VALUE,t.S_VALUE,t.COOP_VALUE,t.H_VALUE,t.DEVICE_BUDGET_COST,t.SUR_FEE_DIS_COUNT_RATE,t.DES_FEE_DIS_COUNT_RATE, (select listagg(p.coo_unit_code, ',') within group(order by p.coo_unit_code) from ( select distinct coo_unit_code from t_spdi_proj where is_sub_proj = 'Y' and sub_proj_type_code = 'wbhz' and PROJ_STATUS != 'P_5' AND PROJ_STATUS != 'P_4' and parent_code = t.proj_code )p ) coo_unit_code, (select listagg(to_char(p.coo_unit), ',') within group(order by p.coo_unit) from ( select distinct coo_unit from t_spdi_proj where is_sub_proj = 'Y' and sub_proj_type_code = 'wbhz' and PROJ_STATUS != 'P_5' AND PROJ_STATUS != 'P_4' and parent_code = t.proj_code )p ) coo_unit from T_SPDI_PROJ t where t.PROJ_STATUS NOT IN ('E','H','W') order by t.proj_id )a

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