11. A computerized method for identifying related documents, the method implemented using a processor and memory and comprising: receiving an input document; searching at least one database for a set of one or more related second documents based on content of the input document; identifying one or more of the related second documents as more probably related to the input document than one or more of the other related second documents using a support vector machine; and wherein identifying the one or more of the related second documents includes defining a multi-dimensional feature vector for each related second document, with the vector having a set of features including a similarity feature indicating similarity of at least a portion of the related second document to a portion of the input document and processing the multi-dimensional feature vector using support-vector processing wherein each of the feature vectors is based on a title similarity score for one or more portions of a said related second document and a said input document.
11. A computerized method for identifying related documents, the method implemented using a processor and memory and comprising: receiving an input document; searching at least one database for a set of one or more related second documents based on content of the input document; identifying one or more of the related second documents as more probably related to the input document than one or more of the other related second documents using a support vector machine; and wherein identifying the one or more of the related second documents includes defining a multi-dimensional feature vector for each related second document, with the vector having a set of features including a similarity feature indicating similarity of at least a portion of the related second document to a portion of the input document and processing the multi-dimensional feature vector using support-vector processing wherein each of the feature vectors is based on a title similarity score for one or more portions of a said related second document and a said input document. 12. The computerized method of claim 11 , wherein the input document is a judicial opinion.