MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 07/07/01 through 07/13/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 276 281
Davis 74 1 75
Irvine 77 0 77
Los Angeles 1 118 119
Riverside 1 13 14
San Diego 56 107 163
San Francisco 18 0 18
Santa Barbara 1 38 39
Santa Cruz 0 46 46
Lawrence Berkeley 0 37 37
Lawrence Livermore 0 34 34
Los Alamos 0 0 0
Other - UC 0 48 48
Other-Network UC n/a 500 500
_______ ______ _____
233 1,218 1,451
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 867 2,150 17,898
INS90 186 354 1,859
INS85 161 318 1,063
INS80 124 219 799
INS69 113 230 2,122
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 22 81 435
2-4 a.m. 37 107 950
4-6 a.m. 35 79 375
6-8 a.m. 45 131 885
8-10 a.m. 176 402 2,840
10-12 a.m. 255 569 4,014
12-2 p.m. 241 466 2,579
2-4 p.m. 259 524 5,053
4-6 p.m. 219 510 3,427
6-8 p.m. 81 193 1,654
8-10 p.m. 54 125 733
10-12 p.m. 27 84 796
__________ __________ __________ _________________
Total: 1,451 3,271 23,741
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 16 664 680
Davis 184 3 187
Irvine 209 0 209
Los Angeles 2 235 237
Riverside 2 29 31
San Diego 168 232 400
San Francisco 46 0 46
Santa Barbara 1 95 96
Santa Cruz 0 88 88
Lawrence Berkeley 0 87 87
Lawrence Livermore 0 161 161
Los Alamos 0 0 0
Other - UC 0 109 109
Other-Network UC n/a 940 940
_______ ______ _____
628 2,643 3,271
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 145 5,211 5,356
Davis 2,349 1 2,350
Irvine 1,418 0 1,418
Los Angeles 296 1,166 1,462
Riverside 0 213 213
San Diego 638 2,080 2,718
San Francisco 242 0 242
Santa Barbara 8 921 929
Santa Cruz 0 1,197 1,197
Lawrence Berkeley 0 478 478
Lawrence Livermore 0 1,275 1,275
Los Alamos 0 0 0
Other - UC 0 593 593
Other-Network UC n/a 5,510 5,510
_______ ______ _____
5,096 18,645 23,741
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 6.2
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) 9:45
Average session length (minutes:seconds) 13:53
Longest session recorded (minutes:seconds) 436:03
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 1610.1
Retrievals per search - standard deviation 21901
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 71.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,981 32.0%
DISPLAY (excluding automatic displays) 3,284 35.2%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 57 0.6%
EXPLAIN 103 1.1%
SET/RESET 919 9.9%
SHOW 23 0.2%
ADD ON (AND, OR, AND NOT) 290 3.1%
LOGON or LOGOFF 1,164 12.5%
COMMENT 0 0.0%
SAVE 145 1.6%
USE 9 0.1%
OTHER 350 3.8%
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 1,490 46.0% 367 24.6% 19 79.6 310.8
TITLE WORD 551 17.0% 274 49.7% 6 743.2 8311.7
EXACT TITLE 28 0.9% 22 78.6% 2 18.8 32.3
JOURNAL 78 2.4% 38 48.7% 45 2715.5 9135.9
EXACT JOURNAL 18 0.6% 8 44.4% 83 2600.3 5830.8
SUBJECT 112 3.5% 32 28.6% 31 2743.5 15453.8
EXACT SUBJECT 8 0.2% 0 0.0% 7 2115.9 5856.5
THESAURUS 3 0.1% 0 0.0% 13 3976.3 6868.2
EXACT THESAURUS 6 0.2% 1 16.7% 6 644.2 875.3
KEYWORD 635 19.6% 88 13.9% 23 2893.5 35116.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 14 0.4% 3 21.4% 13 42.5 62.0
DATE 39 1.2% 9 23.1% 12 61.0 162.5
ADDED 13 0.4% 6 46.2% 9 10.1 6.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 96 3.0% 21 21.9% 80 19146.8 40922.9
CONFERENCE 15 0.5% 7 46.7% 461 520.4 513.2
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 21 0.6% 2 9.5% 67 85.7 83.5
ISSN 3 0.1% 1 33.3% 1,716 1716.0 2264.2
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 92 2.8% 15 16.3% 6 56.3 273.7
EXACT PE 14 0.4% 1 7.1% 3 9.5 13.1
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 2 0.1% 1 50.0% 10 10.0 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 291 9.9% 110 37.8% 6 1096.2 10292.2
Single 2,640 90.1% 673 25.5% 21 1687.6 20526.2
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 4.0%
SHORT 82.5%
LONG 1.9%
TAGS 0.1%
FIELDS 5.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 44.2%
2. First word of command is invalid 21.4%
3. FIND command with invalid index name 6.5%
4. Max. # of ports to a Z39 db are in use 4.9%
5. DISPLAY command contains invalid word 3.4%
6. PS command - no previous screen 2.8%
7. Invalid SET DB INS command issued 2.1%
8. NS of SHOW/EXP command-no next screen 1.6%
9. Valid command at an inappropriate time 1.2%
10. DISPLAY command-record numbers too large 1.0%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. INSPEC BACKFILES 18.4%
2. INSPEC DATABASES 12.6%
3. FIND (INSPEC DBS) 6.8%
4. DATABASES 6.8%
5. 1752 6.8%
6. Unrecognized term 5.8%
7. MAIL 4.9%
8. LOCATE (INS/PSY DBS) 4.9%
9. G124 3.9%
10. GUIDE (INSPEC DBS) 3.9%
11. All others 25.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.9%
2. First word of command is invalid 9.4%
3. DISPLAY command - last of >1 screen 8.8%
4. FIND command with invalid index name 7.5%
5. NS command - no next screen 6.3%
6. DISPLAY command - middle of >1 screen 6.3%
7. DISPLAY command-complete in one screen 5.0%
8. FIND command with zero results 4.4%
9. 16 3.1%
10. FIND command retrieves >1 book 3.1%
11. All others 24.4%
Ten most frequent SHOW requests:
1. HISTORY 78.3%
2. INSPEC LOADING STATISTICS 8.7%
3. SETTINGS (INS/PSY DBS) 4.3%
4. GLOSSARY 4.3%
5. MAIL STATUS 4.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)