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Yehoshua Bar-Hillel
Yehoshua Bar-Hillel ( he, יהושע בר-הלל; 8 September 1915, in Vienna – 25 September 1975, in Jerusalem) was an Israeli philosopher, mathematician, and linguist. He was a pioneer in the fields of machine translation and formal linguistics. Biography Born Oscar Westreich in Vienna, Austria-Hungary, he was raised in Berlin. In 1933 he emigrated to Palestine with the Bnei Akiva youth movement, and briefly joined the kibbutz Tirat Zvi before settling in Jerusalem and marrying Shulamith. During World War II, he served in the Jewish Brigade of the British Army. He fought with the Haganah during the 1948 Arab–Israeli War, losing an eye. Bar-Hillel received his PhD in Philosophy from the Hebrew University where he also studied mathematics under Abraham Fraenkel, with whom he eventually coauthored ''Foundations of Set Theory'' (1958, 1973). Bar-Hillel was a major disciple of Rudolf Carnap, whose ''Logical Syntax of Language'' much influenced him. He began a correspondence wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna
en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST = CEST , utc_offset_DST = +2 , blank_name = Vehicle registration , blank_info = W , blank1_name = GDP , blank1_info = € 96.5 billion (2020) , blank2_name = GDP per capita , blank2_info = € 50,400 (2020) , blank_name_sec1 = HDI (2019) , blank_info_sec1 = 0.947 · 1st of 9 , blank3_name = Seats in the Federal Council , blank3_info = , blank_name_sec2 = GeoTLD , blank_info_sec2 = .wien , website = , footnotes = , image_blank_emblem = Wien logo.svg , blank_emblem_size = Vienna ( ; german: Wien ; ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formal Linguistics
Formal linguistics is the branch of linguistics which uses applied mathematics, applied mathematical methods for the analysis of natural languages. Such methods include formal languages, formal grammars and first-order logical expressions. Formal linguistics also forms the basis of computational linguistics. Since the 1980s, the term is often used to refer to Chomskyan linguistics. Approaches Semiotic Methods of formal linguistics were introduced by semiotics, semioticians such as Charles Sanders Peirce and Louis Hjelmslev. Building on the work of David Hilbert and Rudolf Carnap, Hjelmslev proposed the use of formal grammars to analyse, generate and explain language in his 1943 book ''Prolegomena to a Theory of Language''. In this view, language is regarded as arising from a mathematical relationship between meaning and form. The formal description of language was further developed by linguists including J. R. Firth and Simon Dik, giving rise to modern grammatical frameworks such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pumping Lemma , a stronger version of the pumping lemma for context-free languages
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In the theory of formal languages, the pumping lemma may refer to: *Pumping lemma for regular languages, the fact that all sufficiently long strings in such a language have a substring that can be repeated arbitrarily many times, usually used to prove that certain languages are not regular *Pumping lemma for context-free languages, the fact that all sufficiently long strings in such a language have a pair of substrings that can be repeated arbitrarily many times, usually used to prove that certain languages are not context-free * Pumping lemma for indexed languages * Pumping lemma for regular tree languages See also * Ogden's lemma In the theory of formal languages, Ogden's lemma (named after William F. Ogden) is a generalization of the pumping lemma for context-free languages Pumping may refer to: * The operation of a pump, for moving a liquid from one location to another ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Information Retrieval
Information retrieval (IR) in computing and information science is the process of obtaining information system resources that are relevant to an information need from a collection of those resources. Searches can be based on full-text or other content-based indexing. Information retrieval is the science of searching for information in a document, searching for documents themselves, and also searching for the metadata that describes data, and for databases of texts, images or sounds. Automated information retrieval systems are used to reduce what has been called information overload. An IR system is a software system that provides access to books, journals and other documents; stores and manages those documents. Web search engines are the most visible IR applications. Overview An information retrieval process begins when a user or searcher enters a query into the system. Queries are formal statements of information needs, for example search strings in web search engines. In inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Chicago
The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park neighborhood. The University of Chicago is consistently ranked among the best universities in the world and it is among the most selective in the United States. The university is composed of an undergraduate college and five graduate research divisions, which contain all of the university's graduate programs and interdisciplinary committees. Chicago has eight professional schools: the Law School, the Booth School of Business, the Pritzker School of Medicine, the Crown Family School of Social Work, Policy, and Practice, the Harris School of Public Policy, the Divinity School, the Graham School of Continuing Liberal and Professional Studies, and the Pritzker School of Molecular Engineering. The university has additional campuses and centers in London, Paris, Beijing, Delhi, and Hong Kong, as well as in downtown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hebrew University
The Hebrew University of Jerusalem (HUJI; he, הַאוּנִיבֶרְסִיטָה הַעִבְרִית בִּירוּשָׁלַיִם) is a public research university based in Jerusalem, Israel. Co-founded by Albert Einstein and Dr. Chaim Weizmann in July 1918, the public university officially opened in April 1925. It is the second-oldest Israeli university, having been founded 30 years before the establishment of the State of Israel but six years after the older Technion university. The HUJI has three campuses in Jerusalem and one in Rehovot. The world's largest library for Jewish studies—the National Library of Israel—is located on its Edmond J. Safra campus in the Givat Ram neighbourhood of Jerusalem. The university has five affiliated teaching hospitals (including the Hadassah Medical Center), seven faculties, more than 100 research centers, and 315 academic departments. , one-third of all the doctoral candidates in Israel were studying at the HUJI. Among its first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1948 Arab–Israeli War
The 1948 (or First) Arab–Israeli War was the second and final stage of the 1948 Palestine war. It formally began following the end of the British Mandate for Palestine at midnight on 14 May 1948; the Israeli Declaration of Independence had been issued earlier that day, and a military coalition of Arab states entered the territory of British Palestine in the morning of 15 May. The day after the 29 November 1947 adoption of the United Nations Partition Plan for Palestine – which planned to divide Palestine into an Arab state, a Jewish state, and the Special International Regime encompassing the cities of Jerusalem and Bethlehem – an ambush of two buses carrying Jews took place in an incident regarded as the first in the civil war which broke out after the UN decision. The violence had certain continuities with the past, the Fajja bus attack being a direct response to a Lehi massacre on 19 November of five members of an Arab family, suspected of being British informan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haganah
Haganah ( he, הַהֲגָנָה, lit. ''The Defence'') was the main Zionist paramilitary organization of the Jewish population ("Yishuv") in Mandatory Palestine between 1920 and its disestablishment in 1948, when it became the core of the Israel Defense Forces (IDF). Formed out of previous existing militias, its original purpose was to defend Jewish settlements from Arab attacks, such as the riots of 1920, 1921, 1929 and during the 1936–1939 Arab revolt in Palestine. It was under the control of the Jewish Agency, the official governmental body in charge of Palestine's Jewish community during the British Mandate. Until the end of the Second World War, Haganah's activities were moderate, in accordance with the policy of havlaga ("self-restraint"), which caused the splitting of the more radical Irgun and Lehi. The group received clandestine military support from Poland. Haganah sought cooperation with the British in the event of an Axis invasion of Palestine through N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jewish Brigade
The Jewish Infantry Brigade Group, more commonly known as the Jewish Brigade Group or Jewish Brigade, was a military formation of the British Army in the Second World War. It was formed in late 1944 and was recruited among Yishuv Jews from Mandatory Palestine and commanded by Anglo-Jewish officers. It served in the latter stages of the Italian Campaign, and was disbanded in 1946. After the war, some members of the Brigade assisted Holocaust survivors to emigrate to Mandatory Palestine as part of Aliyah Bet, in defiance of British restrictions. Background Anglo-Zionist relations After the First World War, the British and the French empires replaced the Ottoman Empire as the preeminent powers in the Middle East. This change brought closer the Zionist Movement's goal of creating a Jewish state. The Balfour Declaration indicated that the British Government supported the creation of a Jewish homeland in Palestine in principle, marking the first official support for Zionist aims. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tirat Zvi
Tirat Zvi ( he, טִירַת צְבִי, lit. ''Zvi Castle'') is a religious kibbutz in the Beit She'an Valley, ten kilometers south of the city of Beit She'an, Israel, just west of the Jordan River and the Israel-Jordan border. It falls under the jurisdiction of Valley of Springs Regional Council. In it had a population of . Etymology Tirat Zvi means Zvi's Fort. It was named after Rabbi Zvi Hirsch Kalischer (1795-1874), one of the fathers of the Zionist Movement and a leader of Hovevei Zion, while the ''tira'' or "fort" refers to a two-story mud-brick structure purchased from the Arab landowner, Musa al-Alami.History of Kibbutz Tirat Zvi Yorav History The kibbutz was founded on 30 June 1937 as part of the[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kibbutz
A kibbutz ( he, קִבּוּץ / , lit. "gathering, clustering"; plural: kibbutzim / ) is an intentional community in Israel that was traditionally based on agriculture. The first kibbutz, established in 1909, was Degania. Today, farming has been partly supplanted by other economic branches, including industrial plants and high-tech enterprises. Kibbutzim began as utopian communities, a combination of socialism and Zionism. In recent decades, some kibbutzim have been privatized and changes have been made in the communal lifestyle. A member of a kibbutz is called a ''kibbutznik'' ( he, קִבּוּצְנִיק / ; plural ''kibbutznikim'' or ''kibbutzniks''). In 2010, there were 270 kibbutzim in Israel with population of 126,000. Their factories and farms account for 9% of Israel's industrial output, worth US$8 billion, and 40% of its agricultural output, worth over US$1.7 billion. Some kibbutzim had also developed substantial high-tech and military industries. For example ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
