MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 10/13/01 through 10/19/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 266 274
Davis 58 7 65
Irvine 70 0 70
Los Angeles 2 124 126
Riverside 0 14 14
San Diego 55 84 139
San Francisco 35 0 35
Santa Barbara 5 17 22
Santa Cruz 4 32 36
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 30 30
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 398 398
_______ ______ _____
237 1,034 1,271
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 804 1,832 14,179
INS90 161 274 931
INS85 114 189 1,007
INS80 101 188 720
INS69 91 149 986
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 32 207
2-4 a.m. 19 40 232
4-6 a.m. 19 55 444
6-8 a.m. 39 107 479
8-10 a.m. 153 264 1,423
10-12 a.m. 271 523 3,328
12-2 p.m. 238 487 3,272
2-4 p.m. 227 482 3,748
4-6 p.m. 166 324 2,457
6-8 p.m. 64 159 1,410
8-10 p.m. 50 114 687
10-12 p.m. 10 45 136
__________ __________ __________ _________________
Total: 1,271 2,632 17,823
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 18 566 584
Davis 154 17 171
Irvine 216 0 216
Los Angeles 5 249 254
Riverside 0 41 41
San Diego 185 167 352
San Francisco 74 0 74
Santa Barbara 10 38 48
Santa Cruz 4 70 74
Lawrence Berkeley 0 76 76
Lawrence Livermore 0 39 39
Los Alamos 0 0 0
Other - UC 0 61 61
Other-Network UC n/a 642 642
_______ ______ _____
666 1,966 2,632
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 293 3,875 4,168
Davis 1,210 28 1,238
Irvine 2,781 0 2,781
Los Angeles 0 2,078 2,078
Riverside 0 116 116
San Diego 836 1,119 1,955
San Francisco 987 0 987
Santa Barbara 35 287 322
Santa Cruz 34 359 393
Lawrence Berkeley 0 686 686
Lawrence Livermore 0 446 446
Los Alamos 0 0 0
Other - UC 0 455 455
Other-Network UC n/a 2,198 2,198
_______ ______ _____
6,176 11,647 17,823
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 6:43
Average session length (minutes:seconds) 13:03
Longest session recorded (minutes:seconds) 869:40
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 442.1
Retrievals per search - standard deviation 7998.1
Percent of searches completed with 0 results 29.7%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 65.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,392 31.6%
DISPLAY (excluding automatic displays) 2,490 32.9%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 74 1.0%
EXPLAIN 77 1.0%
SET/RESET 781 10.3%
SHOW 27 0.4%
ADD ON (AND, OR, AND NOT) 240 3.2%
LOGON or LOGOFF 1,083 14.3%
COMMENT 0 0.0%
SAVE 77 1.0%
USE 3 0.0%
OTHER 324 4.3%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 1,064 41.4% 280 26.3% 20 72.2 204.9
TITLE WORD 605 23.5% 265 43.8% 6 1077.1 19118.4
EXACT TITLE 9 0.3% 4 44.4% 1 3.2 4.9
JOURNAL 33 1.3% 20 60.6% 1,159 876.4 803.1
EXACT JOURNAL 51 2.0% 20 39.2% 710 1435.0 1797.5
SUBJECT 81 3.1% 20 24.7% 41 296.3 918.2
EXACT SUBJECT 5 0.2% 1 20.0% 13 12.5 6.1
THESAURUS 2 0.1% 0 0.0% 618 617.5 505.6
EXACT THESAURUS 5 0.2% 0 0.0% 243 243.0 0.0
KEYWORD 456 17.7% 120 26.3% 21 1787.1 10976.3
SUBFILE 6 0.2% 0 0.0% 34 36.7 13.1
FORM 17 0.7% 1 5.9% 36 77.9 187.7
DATE 52 2.0% 20 38.5% 11 190.8 435.9
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 29 1.1% 6 20.7% 60 570.3 1108.5
CONFERENCE 7 0.3% 2 28.6% 12 2331.2 4647.7
LANGUAGE 3 0.1% 0 0.0% 31 35.7 9.0
CHEMICAL NAME 9 0.3% 0 0.0% 123 182.6 148.4
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 124 4.8% 23 18.5% 5 91.0 425.0
EXACT PE 13 0.5% 3 23.1% 9 29.8 61.5
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 1 0.0% 0 0.0% 30 30.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 207 8.8% 83 40.1% 9 89.5 247.5
Single 2,147 91.2% 614 28.6% 18 731.3 10388.9
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 1 100% 1 100% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 82.5%
LONG 3.4%
TAGS 0.2%
FIELDS 3.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.1%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 42.3%
2. First word of command is invalid 26.1%
3. FIND command with invalid index name 7.2%
4. Max. # of ports to a Z39 db are in use 5.6%
5. PS command - no previous screen 2.3%
6. Valid command at an inappropriate time 1.5%
7. DISPLAY command - no FIND results 1.2%
8. 857 1.2%
9. DISPLAY command contains invalid word 1.1%
10. DISPLAY command-record numbers too large 0.9%
11. All others 10.6%
Ten most frequent EXPLAIN requests:
1. GUIDE (INSPEC DBS) 13.0%
2. INSPEC DATABASES 11.7%
3. FIND (INSPEC DBS) 11.7%
4. INDEXES (INSPEC DBS) 10.4%
5. MAIL 6.5%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 6.5%
7. INSPEC BACKFILES 5.2%
8. DISPLAY (INS/PSY DBS) 5.2%
9. 1170 3.9%
10. SAVE 3.9%
11. All others 22.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.5%
2. FIND command with invalid index name 11.3%
3. First word of command is invalid 8.6%
4. DISPLAY command - middle of >1 screen 6.0%
5. FIND command retrieves >1 book 4.6%
6. NS command - no next screen 4.0%
7. DISPLAY command - last of >1 screen 4.0%
8. FIND command with zero results 3.3%
9. 3 HELP commands issued from same code 2.6%
10. FIND command retrieves 1 book 2.6%
11. All others 28.5%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. FORM NAMES (INSPEC DBS) 7.4%
3. SETTINGS (INS/PSY DBS) 7.4%
4. SEARCH 7.4%
5. PUBLICATION TYPES (INSPEC DBS) 3.7%
6. INSPEC NEWS 3.7%
7. INSPEC LOADING STATISTICS 3.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)