MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 08/04/01 through 08/10/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 11 271 282
Davis 45 4 49
Irvine 79 0 79
Los Angeles 0 75 75
Riverside 5 8 13
San Diego 62 120 182
San Francisco 16 0 16
Santa Barbara 1 45 46
Santa Cruz 11 25 36
Lawrence Berkeley 0 65 65
Lawrence Livermore 0 38 38
Los Alamos 0 0 0
Other - UC 0 33 33
Other-Network UC n/a 438 438
_______ ______ _____
230 1,122 1,352
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 841 1,923 13,296
INS90 189 344 1,659
INS85 118 220 1,040
INS80 104 183 761
INS69 100 215 1,327
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 24 286
2-4 a.m. 5 61 495
4-6 a.m. 16 48 118
6-8 a.m. 44 96 504
8-10 a.m. 156 347 2,250
10-12 a.m. 250 536 3,306
12-2 p.m. 241 491 3,521
2-4 p.m. 269 560 3,693
4-6 p.m. 204 428 2,178
6-8 p.m. 83 134 971
8-10 p.m. 47 110 573
10-12 p.m. 24 50 188
__________ __________ __________ _________________
Total: 1,352 2,885 18,083
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 28 590 618
Davis 109 11 120
Irvine 188 0 188
Los Angeles 0 153 153
Riverside 6 19 25
San Diego 135 297 432
San Francisco 47 0 47
Santa Barbara 2 81 83
Santa Cruz 23 35 58
Lawrence Berkeley 0 157 157
Lawrence Livermore 0 97 97
Los Alamos 0 0 0
Other - UC 0 82 82
Other-Network UC n/a 825 825
_______ ______ _____
538 2,347 2,885
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 94 4,081 4,175
Davis 1,019 29 1,048
Irvine 2,775 0 2,775
Los Angeles 0 980 980
Riverside 22 129 151
San Diego 451 2,786 3,237
San Francisco 125 0 125
Santa Barbara 3 834 837
Santa Cruz 104 204 308
Lawrence Berkeley 0 1,355 1,355
Lawrence Livermore 0 735 735
Los Alamos 0 0 0
Other - UC 0 263 263
Other-Network UC n/a 2,094 2,094
_______ ______ _____
4,593 13,490 18,083
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 5.8
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) 10:59
Average session length (minutes:seconds) 17:00
Longest session recorded (minutes:seconds) 1118
Average number of searches completed per session 2.1
Retrievals per search - median 3.0
Retrievals per search - average 1366.7
Retrievals per search - standard deviation 22359
Percent of searches completed with 0 results 31.8%
Percent of searches entered that are long 6.9%
Percent of long searches completed
(includes partial results) 81.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,616 31.8%
DISPLAY (excluding automatic displays) 2,951 35.8%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 47 0.6%
EXPLAIN 54 0.7%
SET/RESET 905 11.0%
SHOW 18 0.2%
ADD ON (AND, OR, AND NOT) 269 3.3%
LOGON or LOGOFF 980 11.9%
COMMENT 0 0.0%
SAVE 93 1.1%
USE 2 0.0%
OTHER 297 3.6%
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 1,282 42.0% 380 29.6% 15 102.7 490.8
TITLE WORD 744 24.4% 388 52.1% 3 239.8 2211.1
EXACT TITLE 27 0.9% 18 66.7% 1 1.4 0.7
JOURNAL 107 3.5% 37 34.6% 13 2153.0 4833.3
EXACT JOURNAL 33 1.1% 14 42.4% 2,894 5545.9 7809.5
SUBJECT 84 2.8% 20 23.8% 15 1875.8 7749.7
EXACT SUBJECT 4 0.1% 1 25.0% 8 5592.7 9676.4
THESAURUS 4 0.1% 0 0.0% 21 3027.3 6023.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 468 15.3% 68 14.5% 25 4190.2 41820.4
SUBFILE 6 0.2% 0 0.0% 22 126.8 175.7
FORM 17 0.6% 2 11.8% 28 91.7 195.2
DATE 56 1.8% 11 19.6% 12 75.1 159.4
ADDED 11 0.4% 6 54.5% 22 21.0 6.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 61 2.0% 15 24.6% 26 1061.6 4121.8
CONFERENCE 10 0.3% 2 20.0% 417 762.1 1363.5
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 9 0.3% 6 66.7% 4 3.7 2.5
ISSN 2 0.1% 2 100% 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 112 3.7% 21 18.8% 5 22.3 75.4
EXACT PE 11 0.4% 2 18.2% 3 20.0 40.8
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 4 0.1% 0 0.0% 163 231.5 248.1
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 446 17.3% 163 36.5% 7 255.6 2238.3
Single 2,136 82.7% 661 30.9% 16 1476.2 21941.9
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 2 100% 1 50.0% 15 15.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 82.3%
LONG 1.9%
TAGS 0.0%
FIELDS 6.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.9%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 43.3%
2. First word of command is invalid 22.4%
3. FIND command with invalid index name 6.8%
4. Max. # of ports to a Z39 db are in use 6.0%
5. DISPLAY command contains invalid word 3.9%
6. Valid command at an inappropriate time 1.9%
7. DISPLAY command - no FIND results 1.4%
8. Command contains escape or arrow key 1.3%
9. Search term missing from search command 1.2%
10. PS command - no previous screen 1.0%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 14.8%
2. GUIDE (INSPEC DBS) 13.0%
3. COMMANDS (INS/PSY/ABI/BIO DBS) 13.0%
4. FIND (INSPEC DBS) 7.4%
5. DATABASES 7.4%
6. ADDON SEARCH 7.4%
7. INSPEC BACKFILES 5.6%
8. INDEXES (INSPEC DBS) 5.6%
9. DISPLAY (INS/PSY DBS) 3.7%
10. MAIL 1.9%
11. All others 20.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.8%
2. First word of command is invalid 10.9%
3. FIND command with invalid index name 9.9%
4. FIND command with zero results 8.9%
5. FIND command retrieves >1 book 6.9%
6. DISPLAY command - middle of >1 screen 5.9%
7. 1243 5.9%
8. NS command - no next screen 5.0%
9. Add-on search retrieves >1 record 4.0%
10. DISPLAY command-complete in one screen 4.0%
11. All others 19.8%
Ten most frequent SHOW requests:
1. HISTORY 85.7%
2. INSPEC NEWS 7.1%
3. SEARCH 7.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)