Abstract: An information retrieval precision evaluation method and device and a computer-readable storage medium. The method includes: retrieving, by virtue of a first predetermined retrieval system, at least one first retrieval result corresponding to a predetermined keyword, and retrieving, by virtue of a second predetermined retrieval system, at least one second retrieval result corresponding to the keyword; generating a first retrieval sequence number corresponding to the first retrieval result and a second retrieval sequence number corresponding to the second retrieval result according to a preset sequence number generation rule; and analyzing the generated first retrieval sequence number and second retrieval sequence number according to a predetermined precision analysis rule to obtain precision of the first retrieval system and the second retrieval system.

Abstract: A data processor implemented method for gamification of activity tracking to determine a reward is provided. The method includes obtaining activity tracking information from one or more activity tracking sensors, and comparing one or more associated activity tracking target with the obtained activity tracking information to generate an activity tracking level. The method also includes assessing the activity tracking level for determination of the reward, and interfacing with a payment gateway to make payment to an entity associated with the reward, wherein an amount of the payment is dependent on the reward.

Abstract: A vibratory fluidized bed dryer includes a deck with a surface on which a bed of materials is formed, the deck having apertures through which air passes to fluidize the bed of materials on the deck, a source of air coupled to the apertures in the deck to supply air to the bed through the apertures in the deck, and a vibration generator coupled to the deck. The deck has at least two zones, each zone having a different open area percentage, such that the air passing through each zone produces a different superficial velocity.

Abstract: Disclosed are a method, a terminal, and an apparatus for extracting a headword and a computer-readable storage medium, wherein the method comprises: acquiring a text information input by a user; determining an out-edge weight of each search term of the text information; calculating a linkage-matrix for the each search term; calculating a priori score of the each search term according to a preset document library; determining a random jumping vector for the each search term according to the priori score; calculating a first preliminary score of the each search term according to the linkage-matrix and the random jumping vector; determining a second preliminary score of the each search term according to a preset part-of-speech configuration rule; determining a final degree score of the each search term according to the first preliminary score and the second preliminary score; extracting the headword of the text information according to the final degree score.

Abstract: The present application discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of glass material. The camera optical lens further satisfies specific conditions.

Abstract: Disclosed are a method, a terminal, and an apparatus for extracting a headword and a computer-readable storage medium, wherein the method comprises: acquiring a text information input by a user; determining an out-edge weight of each search term of the text information; calculating a linkage-matrix for the each search term; calculating a priori score of the each search term according to a preset document library; determining a random jumping vector for the each search term according to the priori score; calculating a first preliminary score of the each search term according to the linkage-matrix and the random jumping vector; determining a second preliminary score of the each search term according to a preset part-of-speech configuration rule; determining a final degree score of the each search term according to the first preliminary score and the second preliminary score; extracting the headword of the text information according to the final degree score.

Abstract: The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.