Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium determining image relevance responsive to a search query. A method includes, for each resource in a plurality of resources, wherein each resource includes one or more images and text that is separate from each of the one or more images: determining, by a data processing apparatus, and from the text of the resource, resource topics described by the text of the resource. For each of the one or more images, processing the image to determine a set of image topics that describe topics to which content depicted in the image belongs. Determining, by the data process apparatus, one or more topic match scores, wherein each topic match score is a measure of relevance one or more of the image topics of the image to one or more of the resource topics of the resource.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium determining image relevance responsive to a search query. In one aspect, a method includes, for each resource in a plurality of resources, wherein each resource includes one or more images and text that is separate from each of the one or more images: determining, by a data processing apparatus, and from the text of the resource, resource topics described by the text of the resource. For each of the one or more images, processing the image to determine a set of image topics that describe topics to which content depicted in the image belongs. Determining, by the data process apparatus, one or more topic match scores, wherein each topic match score is a measure of relevance one or more of the image topics of the image to one or more of the resource topics of the resource.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Abstract: Compounds represented by the formula 1: A is selected from the group consisting of wherein each R individually is H or acyl, Y is X, N3, NH2, monoalkylamino, or dialkylamino; Z is O or S; and X is selected from the group consisting of hydrogen, halo, hydroxy, alkoxy, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, amino, monoalkylamino, dialkylamino, thioaryl, thioalkyl, allylamino, cyano and nitro; tautomers thereof; and pharmaceutically acceptable salts thereof are provided along with methods for their fabrication. Various of these compounds can be used as anticancer agents, or antiviral agents or to inhibit DNA replication.

Abstract: Patients suffering from cancer are treated by being administered a compound represented by the following formula: wherein each R individually is H or an aliphatic or aromatic acyl group; A is selected from the group consisting of wherein X is selected from the group consisting of hydrogen, fluorine, alkoxy, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, amino, monoalkylamino, dialkylamino, cyano and nitro. The above compounds also inhibit DNA replication in mammalian cells.

Abstract: Compounds represented by the formula 1: A is selected from the group consisting of wherein each R individually is H or acyl, Y is X, N3, NH2, monoalkylamino, or dialkylamino; Z is O or S; and X is selected from the group consisting of hydrogen, halo, hydroxy, alkoxy, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, amino, monoalkylamino, dialkylamino, thioaryl, thioalkyl, allylamino, cyano and nitro; tautomers thereof; and pharmaceutically acceptable salts thereof are provided along with methods for their fabrication. Various of these compounds can be used as anticancer agents, or antiviral agents or to inhibit DNA replication.

Abstract: Patients suffering from cancer are treated by being administered a compound represented by the following formula: wherein each R individually is H or an aliphatic or aromatic acyl group; A is selected from the group consisting of wherein X is selected from the group consisting of hydrogen, fluorine, alkoxy, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, amino, monoalkylamino, dialkylamino, cyano and nitro. The above compounds also inhibit DNA replication in mammalian cells.