MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/04/02 through 05/10/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 218 222
Davis 45 0 45
Irvine 44 0 44
Los Angeles 0 56 56
Riverside 0 7 7
San Diego 57 90 147
San Francisco 5 0 5
Santa Barbara 2 12 14
Santa Cruz 11 13 24
Lawrence Berkeley 0 45 45
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 0 42 42
Other-Network UC n/a 115 115
_______ ______ _____
168 635 803
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 544 1,214 14,398
INS90 92 141 945
INS85 67 119 653
INS80 45 70 372
INS69 55 98 826
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 31 258
2-4 a.m. 15 37 360
4-6 a.m. 9 16 217
6-8 a.m. 37 83 739
8-10 a.m. 95 187 4,990
10-12 a.m. 156 284 1,563
12-2 p.m. 142 317 1,775
2-4 p.m. 145 266 2,507
4-6 p.m. 102 211 2,075
6-8 p.m. 46 88 1,272
8-10 p.m. 27 67 1,083
10-12 p.m. 16 55 355
__________ __________ __________ _________________
Total: 803 1,642 17,194
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 8 468 476
Davis 72 0 72
Irvine 117 0 117
Los Angeles 0 128 128
Riverside 0 9 9
San Diego 117 196 313
San Francisco 8 0 8
Santa Barbara 4 18 22
Santa Cruz 20 50 70
Lawrence Berkeley 0 103 103
Lawrence Livermore 0 51 51
Los Alamos 0 0 0
Other - UC 0 92 92
Other-Network UC n/a 181 181
_______ ______ _____
346 1,296 1,642
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 8,400 8,415
Davis 544 0 544
Irvine 744 0 744
Los Angeles 0 1,117 1,117
Riverside 0 97 97
San Diego 704 1,823 2,527
San Francisco 15 0 15
Santa Barbara 0 40 40
Santa Cruz 84 281 365
Lawrence Berkeley 0 846 846
Lawrence Livermore 0 565 565
Los Alamos 0 0 0
Other - UC 0 591 591
Other-Network UC n/a 1,328 1,328
_______ ______ _____
2,106 15,088 17,194
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.8
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
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Median session length (minutes:seconds) 6:55
Average session length (minutes:seconds) 10:59
Longest session recorded (minutes:seconds) 113:46
Average number of searches completed per session 2.0
Retrievals per search - median 7.0
Retrievals per search - average 420.6
Retrievals per search - standard deviation 4319.0
Percent of searches completed with 0 results 25.0%
Percent of searches entered that are long 5.0%
Percent of long searches completed
(includes partial results) 68.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,542 29.2%
DISPLAY (excluding automatic displays) 1,949 36.9%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 45 0.9%
EXPLAIN 69 1.3%
SET/RESET 381 7.2%
SHOW 5 0.1%
ADD ON (AND, OR, AND NOT) 100 1.9%
LOGON or LOGOFF 879 16.7%
COMMENT 0 0.0%
SAVE 51 1.0%
USE 1 0.0%
OTHER 255 4.8%
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 705 41.7% 162 23.0% 17 82.9 335.3
TITLE WORD 223 13.2% 90 40.4% 6 48.2 105.6
EXACT TITLE 7 0.4% 6 85.7% 1 1.0 0.0
JOURNAL 66 3.9% 19 28.8% 37 6384.0 22521.1
EXACT JOURNAL 14 0.8% 3 21.4% 905 1096.0 1223.4
SUBJECT 79 4.7% 28 35.4% 22 318.2 1303.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
THESAURUS 16 0.9% 1 6.3% 61 2286.3 6035.6
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 432 25.6% 82 19.0% 18 715.8 3400.8
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 22 1.3% 3 13.6% 4 12.9 21.6
DATE 9 0.5% 1 11.1% 27 28.5 20.3
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. 19 1.1% 3 15.8% 2 48.9 112.2
CONFERENCE 14 0.8% 1 7.1% 13 44.1 115.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 11 0.7% 3 27.3% 5 60.4 133.7
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 5 0.3% 0 0.0% 75 174.2 135.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 55 3.3% 10 18.2% 4 24.0 41.9
EXACT PE 8 0.5% 1 12.5% 3 11.4 14.4
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 5 0.3% 0 0.0% 1 13.0 25.2
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 170 11.2% 40 23.5% 4 19.4 57.2
Single 1,344 88.8% 333 24.8% 22 656.7 5431.8
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 0 0.0% 0 0.0% 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 3.3%
SHORT 83.7%
LONG 3.5%
TAGS 0.7%
FIELDS 2.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 46.1%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 8.5%
4. Search term missing from search command 2.5%
5. PS command - no previous screen 1.9%
6. DISPLAY command - no FIND results 1.7%
7. DISPLAY command-record numbers too large 1.5%
8. DISPLAY command contains invalid word 1.5%
9. Valid command at an inappropriate time 0.8%
10. Single letter keyword search 0.6%
11. All others 7.9%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 13.0%
2. GUIDE (INSPEC DBS) 13.0%
3. INSPEC BACKFILES 13.0%
4. INDEXES (INSPEC DBS) 11.6%
5. FIND (INSPEC DBS) 11.6%
6. Unrecognized term 7.2%
7. I047 4.3%
8. DISPLAY (INS/PSY DBS) 4.3%
9. DATABASES 4.3%
10. LOCATE (INS/PSY DBS) 2.9%
11. All others 14.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.9%
2. First word of command is invalid 12.3%
3. FIND command with zero results 8.8%
4. DISPLAY command - middle of >1 screen 8.8%
5. FIND command with invalid index name 7.0%
6. FIND command retrieves >1 book 6.1%
7. DISPLAY command-first of >1 screen 5.3%
8. 232 3.5%
9. DISPLAY command-complete in one screen 3.5%
10. Multi-index search with zero results 3.5%
11. All others 12.3%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. SYSTEM NEWS 20.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)