A Novel Hybrid Approach for Multi-Dimensional Data Anonymization for Apache Spark

Multi-dimensional data anonymization approaches (e.g., Mondrian) ensure more fine-grained data privacy by providing a different anonymization strategy applied for each attribute. Many variations of multi-dimensional anonymization have been implemented on different distributed processing platforms (e.g., MapReduce, Spark) to take advantage of their scalability and parallelism supports. According to our critical analysis on overheads, either existing iteration-based or recursion-based approaches do not provide effective mechanisms for creating the optimal number of and relative size of resilient distributed datasets (RDDs), thus heavily suffer from performance overheads. To solve this issue, we propose a novel hybrid approach for effectively implementing a multi-dimensional data anonymization strategy (e.g., Mondrian) that is scalable and provides high-performance. Our hybrid approach provides a mechanism to create far fewer RDDs and smaller size partitions attached to each RDD than existing approaches. This optimal RDD creation and operations approach is critical for many multi-dimensional data anonymization applications that create tremendous execution complexity. The new mechanism in our proposed hybrid approach can dramatically reduce the critical overheads involved in re-computation cost, shuffle operations, message exchange, and cache management.

Psicomotricidad, corporalidad, género y filosofía positivista en Chile: análisis crítico de documentos ministeriales (Psychomotricity, corporeality, gender and positivist philosophy in Chile: a critical analysis of ministerial documents)

La educación formal puede ser entendida como una actividad cultural que es influenciada por múltiples perspectivas epistemológicas que están presentes en la sociedad. Además, cada nación tiene sus propias particularidades en función de su propia historia y ciudadanía que son únicas. Unas de las corrientes teóricas que ha tenido un auge pedagógico en los últimos años en América Latina es la perspectiva feminista, promoviendo la igualdad de género. Considerando dicho contexto, se desarrolló el presente ensayo cuyo objetivo es analizar desde una perspectiva crítica y de género cuatro documentos ministeriales chilenos sobre psicomotricidad y corporalidad en edad infantil. Los análisis reflejaron que existe una marcada tendencia conductista, positivista, neoliberal y acrítica en torno al género, la psicomotricidad y la corporalidad en los textos ministeriales considerados. De este modo, se estaría promoviendo una educación infantil que asume una actitud pasiva ante las injusticias sociales y los estereotipos de género de corte patriarcal. En este sentido, se estaría reproduciendo, en el profesorado y en el alumnado infantil, una racionalidad curricular técnica y tradicional. Abstract: Formal education can be understood as a cultural activity that is influenced by multiple epistemological perspectives that are present in society. In addition, each nation has its own particularities based on its own unique history and citizenship. One of the theoretical currents that has had a pedagogical boom in recent years in Latin America is the feminist perspective, promoting gender equality. Considering this context, this essay was developed with the objective of analyzing from a critical and gender perspective four Chilean ministerial documents on psychomotricity and corporeality in early childhood. The analyses showed that there is a marked behaviourist, positivist, neoliberal and uncritical tendency towards gender, psychomotor skills and corporeality in the ministerial texts considered. In this way, it would be promoting an early childhood education that assumes a passive attitude towards social injustices and patriarchal gender stereotypes. In this sense, a technical and traditional curricular rationality is being reproduced among teachers and children.