WO2013029777A1 - Procédé et dispositif de mise à disposition d'une interface utilisateur - Google Patents

Procédé et dispositif de mise à disposition d'une interface utilisateur Download PDF

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Publication number
WO2013029777A1
WO2013029777A1 PCT/EP2012/003607 EP2012003607W WO2013029777A1 WO 2013029777 A1 WO2013029777 A1 WO 2013029777A1 EP 2012003607 W EP2012003607 W EP 2012003607W WO 2013029777 A1 WO2013029777 A1 WO 2013029777A1
Authority
WO
WIPO (PCT)
Prior art keywords
displayed
list
input
objects
subset
Prior art date
Application number
PCT/EP2012/003607
Other languages
German (de)
English (en)
Other versions
WO2013029777A8 (fr
Inventor
Thomas Neitzel
Henry SCHINDEL
Original Assignee
Volkswagen Aktiengesellschaft
F. Porsche Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen Aktiengesellschaft, F. Porsche Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Priority to EP12761542.5A priority Critical patent/EP2751652A1/fr
Publication of WO2013029777A1 publication Critical patent/WO2013029777A1/fr
Publication of WO2013029777A8 publication Critical patent/WO2013029777A8/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0481—Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
    • G06F3/0482—Interaction with lists of selectable items, e.g. menus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0484—Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
    • G06F3/0485—Scrolling or panning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/11—Instrument graphical user interfaces or menu aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/143—Touch sensitive instrument input devices
    • B60K2360/1438—Touch screens
    • B60K2360/1442—Emulation of input devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/145—Instrument input by combination of touch screen and hardware input devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/16—Type of output information
    • B60K2360/164—Infotainment

Definitions

  • the present invention relates to a method and an apparatus for providing a user interface.
  • the method according to the invention is data technology
  • stored objects are assigned at least one attribute, which is described by a sortable string, several objects are sorted in a list depending on the string associated with the attribute and at least a subset of the objects sorted in the list is displayed.
  • a search input is detected and the graphical representation of the list is changed.
  • the information should thus be displayed in the vehicle so that the information recording by the driver does not lead to a
  • the information presented should therefore be intuitively and quickly detectable by the driver, so that he only has to take his eyes off the driving experience for a very short time for the information recording. Furthermore, the operation performed by the user should be executable as soon as possible.
  • the representation of information in a vehicle is in many cases in that a subset of a total information is displayed on the display area in the vehicle and the user can change the subset.
  • the total information may, for example, relate to a list with a plurality of list entries. Because of the limited size of the display area in the vehicle, however, only a subset of the list entries of the overall list can be displayed. Through an operation, the user can scroll (scroll) to bring other list entries to display.
  • the user can perform, for example, a control movement of a certain length. Further, the user can operate, for example, a control for a certain period of operation.
  • the overall information is typically structured in such a way that data technology
  • stored objects are associated with one or more attributes described by a sortable string. This allows the objects to be sorted into lists, making it easier for the user to find them. In particular, sorts by alphabetic, numeric or alphanumeric strings are common.
  • WO 2010/049581 A1 describes a method for searching a list entry fixed in written language in a list.
  • a search entry is made in a different font fixation than the list entries, so that the written characters of the search input and the list entries must be assigned in a kind of transliterations.
  • Ambiguous mappings can be disambiguated via a virtual keyboard on a touchscreen.
  • the virtual keyboard includes only the characters that can be assigned to the beginning characters of the current list entries. After selecting a character in the virtual keyboard, the search amount is restricted and the keyboard is adapted to the character set, which now according to the transliteration occurs next in the list entries.
  • US 2005/0246324 A1 describes a data search system in which search results are determined from a database and are grouped and arranged on the basis of metadata assigned to the respective search results.
  • metafiles can include the location of a search entry in a file or in a file
  • String include, e.g. to an entered letter only those
  • Search results are considered where an input character matches the first character of a string.
  • the inventive method is characterized in that a selection field is displayed for the search input, which includes discrete input options that cover the displayed subset of the sorted objects in the list at least partially.
  • one of the discrete input options is selected by a single actuation, in particular a single touch or press, of an operating element and the displayed subset of the list is changed in dependence on the selected input option.
  • the displayed selection field can optimally utilize the space of the display area.
  • at least part of the information content of the objects in the list is no longer legible. For example, the selection box will be displayed across the list.
  • the selection field is only superimposed on the situation during a search, so that the covering of the objects in the displayed list does not hinder the information recording of the user, in particular the driver of the vehicle. On the contrary, a focus of the user on the selection of a discrete input option is supported.
  • the selection field is displayed in such a way that all input options are visible. This allows the user to see the entire search function at a glance. In particular, there are no hidden input options that would have to be searched for and displayed in a separate operator action.
  • a control element can be done in various ways.
  • the input options can be displayed at positions on the display surface, which are associated with mechanical controls on the edge of the display surface (so-called soft keys).
  • soft keys mechanical controls on the edge of the display surface
  • touch-sensitive display area are displayed and the input options are displayed as operable buttons. This operation is particularly intuitive and easy to carry out when the user is the driver of the vehicle, because he has to look at the information recording and the search input not two positions, but only one position.
  • the selection field is automatically hidden again after the search input. This further reduces the interaction effort on the part of the user.
  • a sorted alphabet and / or a number sequence is displayed in the selection field in which the availability of the individual alphabet characters is visualized as a selectable input option.
  • the display of a string well known to the user helps the user to quickly and easily capture the selection box.
  • a sorting of the input possibilities according to the sorting of the objects allows an intuitive finding of the input possibility to be selected.
  • Unavailable characters or numbers can be visualized in a contrast to the selectable characters or numbers, for example, by rendering them greyed out or semitransparent. On the one hand, this allows the user to quickly orientate themselves because the character string is not changed by unavailable characters, but on the other hand, the availability or non-availability is nevertheless visualized.
  • alphabets encompass not only the Latin alphabet, but possibly also other sortable fonts. It may also include umlauts or special characters.
  • orientation means are displayed, which visualize the section of the displayed subset of the list. It is e.g. a scroll bar is displayed at the right edge of the list so that the user can see to what extent the subset of displayed objects in the list has been changed. For example, he can perform the search input via the selection fiddle for a rough approximation to the search target, and then use the scroll bar for another operator action to fine-tune the search.
  • the user has the opportunity to change the list displayed by the method described so far very quickly and accurately. He can now, after the displayed subset of the list has been changed in the described manner, a displayed object by touching the touch-sensitive display area or by means of a Drehd Wegstellers select.
  • the touch selection has the advantage that the user still has his finger close to the display area after the previous operation. If, however, the objects are displayed so small, for example, that he can not select them safely enough in the given driving situation via the display surface, then he can select the object sought in a manner known per se by turning the rotary control actuator and trigger the associated function by pressing it ,
  • the data-technically stored objects are in particular media files, which are automatically reproduced by the selection.
  • media files which are automatically reproduced by the selection.
  • They are music titles or other audio contributions such as radio plays.
  • Typical attributes are title, artist and the genre of the media file.
  • the device according to the invention for providing a user interface comprises an interface to a data memory for storing objects, each of which is assigned at least one attribute described by a sortable character string,. an input unit for detecting a search input and a display area for displaying lists.
  • the device further comprises a control unit which is connected to the data memory, the input unit and the display area and by means of which a plurality of objects in a list is sortable in dependence on the character string associated with the attribute.
  • Control unit is controlled such that for the search input a selection field is displayed, which includes discrete input options that cover the displayed subset of the sorted objects in the list at least partially. It is further by
  • Operating element is selected and by means of the control unit, the display area is controllable such that, depending on the selected input option, the displayed subset of the list is changeable.
  • the device according to the invention is particularly suitable for carrying out the method according to the invention. It therefore also has the advantages of the method according to the invention.
  • FIG. 1 shows a view of a cockpit of a vehicle with a vehicle
  • FIG. 2 shows schematically the basic structure of a device for
  • FIGS. 3A-3E show display contents generated according to an embodiment of the method according to the invention.
  • FIG. 1 shows a cockpit of a vehicle 1, which is equipped with a device for providing a user interface according to an embodiment of the invention.
  • a belonging to the device touch screen 2 is located in the upper part of the center console, so that he can be well viewed by the driver and passenger and possibly operated.
  • To the right of the touchscreen 2, several push-button switches 4B are optionally arranged, which are related to those displayed on the touchscreen 2 next to them.
  • Display contents can be used as so-called soft keys.
  • a rotary control actuator 4A is arranged, can be performed on the operator actions, in particular with reference to the display contents on the touch screen 2.
  • FIG 2 is a schematic structure of a device for providing a
  • the device comprises a touch screen 2 for displaying
  • a list 10 with sorted objects 11, a selection field 12 and a scroll bar 14 belonging to the list 10 can be displayed on the touchscreen 2, as will be described in more detail in connection with the inventive method with reference to FIGS. 3A-3E ,
  • the touchscreen 2 is connected to a control unit 5, which can receive and evaluate signals generated via the pushbutton switch 4B and the rotary pushbutton 4A, so that control of the display contents on the touchscreen 2 is also possible.
  • the control unit 5 is further connected to a media playback system 6 in which a large number of music files, e.g. a few thousand pieces of music are stored in a data memory 7.
  • the music files are assigned as data-technically stored objects 1 1 each have multiple attributes.
  • the attributes include, among other things, the title, the artist and the genre, which is described by an alphanumeric string that make the objects 1 1 lexically sortable.
  • the objects 1 1 can thus be searched and sorted via the alphanumeric character string associated with the attributes.
  • FIG. 3A an introductory page for playing music titles of FIG.
  • the entry page includes according to a known type an information field 8A, which contains information about the
  • Playback system 6 and possibly on the reproduced music title includes.
  • the home page further comprises buttons 8B for manipulating the reproduced music, e.g. a stop button and a forward button, and other buttons 8C - 8F for operating the media playback system 6, which can be operated by touching the corresponding location of the touch-sensitive surface 3 of the touch screen 2. Via the selection button 8F, the user can display the music files as data-technically stored objects 1 1 in lists 10.
  • buttons 8B for manipulating the reproduced music e.g. a stop button and a forward button
  • buttons 8C - 8F for operating the media playback system 6, which can be operated by touching the corresponding location of the touch-sensitive surface 3 of the touch screen 2.
  • the selection button 8F the user can display the music files as data-technically stored objects 1 1 in lists 10.
  • the entry page changes to a different representation, as shown in FIG. 3B.
  • the user now the attributes associated with the data technically stored objects 1 1 are displayed as list-like buttons, via which the user can start the selection of a particular song.
  • the user selects according to the figure 3B by touching with his finger 15, the button 8G and gets the music titles as objects 1 1 in a list alphabetically sorted by the list 10, as shown in Figure 3C.
  • a scroll bar 14 is displayed on the right edge of the touch screen 2.
  • buttons 8F, 8G could have selected the selection of the buttons 8F, 8G by a pushbutton switch 4B arranged next to the touchscreen 2 via a softkey function.
  • the user is displayed a search button 9.
  • the user starts the search input by e.g. on the search button 9 taps.
  • the user interface is designed multimodal and can process voice input at this stage.
  • the user could start the search input by the voice input "search ".
  • buttons 13B representing these letters are deactivated and grayed out.
  • the buttons 13A representing these letters are highlighted and operable.
  • buttons 13A, 13B are visibly displayed for all letters, even those that do not occur as an initial letter in the current sorting, so that the user can visually capture them quickly. They cover the displayed list 10 of the sorted objects 1 1 almost completely. In this way, the further selection in the previous field of view of the user and taking advantage of the almost complete display area can be continued. Due to the almost complete cover, only a narrow margin can be seen on all sides behind it, so that the user understands the relationship of his actions better. In particular, he sees that the previously displayed list 10 is still displayed in the background.
  • the user can now select a new initial letter by touching one of the selectable buttons 13A once. He chooses e.g. the letter "R” via the corresponding button 13A, whereupon the displayed subset of the music titles changed so that the first beginning with "R" music titles are displayed in the list 10.
  • the scroll bar 14 is thereby automatically according to the changed subset, i. system down moves and the selection box 12 automatically hidden again, as shown in Figure 3E.
  • the user can now select a displayed object 1 1 by touching the touch-sensitive surface 3 of the touch screen 2. If the desired music title is not yet displayed, then this is at least much closer by the search input in the sorting. In this case, the user can find the desired object in the list in a known manner, for example by moving the roller bar 14 or by turning the Drehdschreibstellers 4A. The selection can be made by touching the displayed object 11 or - in the case of operation by means of the Drehdschreibstellers - by pressing the Drehdschreibstellers 4A (not shown). Selecting will automatically play the song. LIST OF REFERENCE NUMBERS

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

L'invention concerne un procédé et un dispositif (2, 3, 4A, 4B, 5, 7) destinés à la mise à disposition d'une interface utilisateur dans un véhicule (1). Selon le procédé conforme à l'invention, au moins un attribut, qui est décrit par une séquence de caractères pouvant être triée, est associé à chaque fois à des objets (11) enregistrés selon une technique informatique ; plusieurs objets (11) sont triés dans une liste (10) en fonction de la séquence de caractères associée à l'attribut ; et au moins une quantité partielle des objets (11) triés dans la liste (10) est affichée. Une entrée de recherche est détectée, et la représentation graphique de la liste (11) est modifiée. Le procédé selon l'invention est caractérisé en ce qu'un champ de sélection (12) est affiché pour l'entrée de recherche, lequel champ comprend des possibilités d'entrée discrètes qui recouvrent au moins en partie la quantité partielle affichée des objets (11) triés dans la liste (10), en ce qu'une des possibilités d'entrée discrète est sélectionnée par un actionnement unique d'un élément de commande (13A ; 4B), et en ce que la quantité partielle affichée de la liste (10) est modifiée en fonction de la possibilité d'entrée sélectionnée.
PCT/EP2012/003607 2011-09-03 2012-08-28 Procédé et dispositif de mise à disposition d'une interface utilisateur WO2013029777A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12761542.5A EP2751652A1 (fr) 2011-09-03 2012-08-28 Procédé et dispositif de mise à disposition d'une interface utilisateur

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Application Number Priority Date Filing Date Title
DE102011112443.1 2011-09-03
DE102011112443A DE102011112443A1 (de) 2011-09-03 2011-09-03 Verfahren und Vorrichtung zum Bereitstellen einer Nutzerschnittstelle in einem Fahrzeug

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WO2013029777A1 true WO2013029777A1 (fr) 2013-03-07
WO2013029777A8 WO2013029777A8 (fr) 2014-04-10

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See also references of EP2751652A1

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110232154A (zh) * 2019-05-30 2019-09-13 平安科技（深圳）有限公司 基于随机森林的产品推荐方法、装置及介质
CN110232154B (zh) * 2019-05-30 2023-06-09 平安科技（深圳）有限公司 基于随机森林的产品推荐方法、装置及介质

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WO2013029777A8 (fr) 2014-04-10
DE102011112443A1 (de) 2013-03-07

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