A cost function for similarity-based hierarchical clustering

The development of algorithms for hierarchical clustering has been hampered by a shortage of precise objective functions. To help address this situation, we introduce a simple cost function on hierarchies over a set of points, given pairwise similarities between those points. We show that this criterion behaves sensibly in canonical instances and that it admits a top-down construction procedure with a provably good approximation ratio

Simulation of three supersonic transport configurations with the Boeing 367-80 in-flight dynamic simulation airplane

In-flight dynamic simulator used to evaluate problems of low-speed approach and landing of supersonic transpor

Letter from [C.] Dewitt [Eldridge?] to Hubert Creekmore

Dewitt writes from Oceanside, New York, to Creekmore in Jackson, Mississippi, regarding United Nations affairs, or what he calls The Purge of the Horrid Reds from the UN. He discusses United Nations Secretary General Dag Hammarskjöld\u27s decision to not reinstate Hope and McCarthy\u27s and Jenner\u27s condemnations of Hope and others. He discusses Klaus Mann\u27s autobiography, his own translation of Roads of Hunger, and his desire to start a biweekly imitation of Le Canard Enchaine or the New Yorker. He states that a friend, Lyle Stuart, created a liberal, anti-Communist monthly periodical and got beaten up in Newark, New Jersey. The letter from Dewitt is written on the back of a press release from the United Nations Department of Public Information. The press release discusses a Political Conference on Korea and the participation of the Soviet Union and India in the Political conference. The release mentions: Korea, Oscar Robles Toledano (Dominican Republic), Luc E. Fouché (Haiti), Hughes Le Gallais (Luxembourg), Ukraine, and Joao Carlos Muniz and Henrique de Souza Gomes (Brazil). Includes envelope.https://egrove.olemiss.edu/creekmore/1163/thumbnail.jp