MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/09/00 through 12/15/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 477 477
Davis 47 4 51
Irvine 70 0 70
Los Angeles 6 180 186
Riverside 5 24 29
San Diego 43 192 235
San Francisco 11 0 11
Santa Barbara 16 58 74
Santa Cruz 5 15 20
Lawrence Berkeley 0 78 78
Lawrence Livermore 0 45 45
Los Alamos 0 0 0
Other - UC 1 79 80
Other-Network UC n/a 411 411
_______ ______ _____
204 1,563 1,767
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,136 2,864 23,881
INS90 258 425 1,610
INS85 164 273 1,364
INS80 110 189 773
INS69 99 199 863
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 20 80 487
2-4 a.m. 13 21 152
4-6 a.m. 26 92 663
6-8 a.m. 76 153 1,178
8-10 a.m. 194 454 2,874
10-12 a.m. 281 597 4,964
12-2 p.m. 260 486 4,221
2-4 p.m. 350 747 5,984
4-6 p.m. 318 715 3,927
6-8 p.m. 130 259 1,702
8-10 p.m. 62 157 924
10-12 p.m. 37 189 1,415
__________ __________ __________ _________________
Total: 1,767 3,950 28,491
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 0 1,114 1,114
Davis 78 9 87
Irvine 303 0 303
Los Angeles 17 358 375
Riverside 5 30 35
San Diego 133 486 619
San Francisco 55 0 55
Santa Barbara 46 111 157
Santa Cruz 16 22 38
Lawrence Berkeley 0 178 178
Lawrence Livermore 0 98 98
Los Alamos 0 0 0
Other - UC 2 198 200
Other-Network UC n/a 691 691
_______ ______ _____
655 3,295 3,950
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 6,630 6,630
Davis 370 221 591
Irvine 3,922 0 3,922
Los Angeles 213 3,183 3,396
Riverside 1 114 115
San Diego 378 4,374 4,752
San Francisco 234 0 234
Santa Barbara 129 1,232 1,361
Santa Cruz 87 100 187
Lawrence Berkeley 0 839 839
Lawrence Livermore 0 822 822
Los Alamos 0 0 0
Other - UC 1 1,833 1,834
Other-Network UC n/a 3,808 3,808
_______ ______ _____
5,335 23,156 28,491
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.4
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) 6:49
Average session length (minutes:seconds) 11:40
Longest session recorded (minutes:seconds) 265:54
Average number of searches completed per session 2.2
Retrievals per search - median 5.0
Retrievals per search - average 416.4
Retrievals per search - standard deviation 8666.3
Percent of searches completed with 0 results 27.7%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 73.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,613 31.4%
DISPLAY (excluding automatic displays) 4,057 35.2%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 76 0.7%
EXPLAIN 161 1.4%
SET/RESET 1,023 8.9%
SHOW 47 0.4%
ADD ON (AND, OR, AND NOT) 337 2.9%
LOGON or LOGOFF 1,600 13.9%
COMMENT 0 0.0%
SAVE 123 1.1%
USE 6 0.1%
OTHER 469 4.1%
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 1,772 44.1% 398 22.5% 15 90.7 356.6
TITLE WORD 915 22.8% 403 44.0% 6 325.2 2914.3
EXACT TITLE 20 0.5% 11 55.0% 1 8.3 14.2
JOURNAL 94 2.3% 38 40.4% 113 2952.7 11400.5
EXACT JOURNAL 55 1.4% 40 72.7% 10 1352.6 5112.5
SUBJECT 119 3.0% 21 17.6% 39 1239.9 5934.1
EXACT SUBJECT 11 0.3% 3 27.3% 7 1941.3 5369.9
THESAURUS 2 0.0% 0 0.0% 5,768 5767.5 7148.1
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 720 17.9% 147 20.4% 29 1754.7 21993.1
SUBFILE 2 0.0% 1 50.0% 2 2.0 0.0
FORM 55 1.4% 11 20.0% 10 47.9 151.7
DATE 54 1.3% 12 22.2% 14 86.9 245.4
ADDED 6 0.1% 1 16.7% 7 7.2 1.8
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 62 1.5% 19 30.6% 29 533.0 1778.6
CONFERENCE 15 0.4% 10 66.7% 642 1687.0 2293.3
LANGUAGE 2 0.0% 0 0.0% 5 5.0 1.4
CHEMICAL NAME 4 0.1% 1 25.0% 54 52.3 46.5
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 3 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 88 2.2% 20 22.7% 4 60.6 326.7
EXACT PE 9 0.2% 3 33.3% 2 2.5 2.1
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 8 0.2% 2 25.0% 48 45.7 45.4
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 444 12.5% 154 34.7% 7 355.9 3481.0
Single 3,120 87.5% 831 26.6% 19 639.9 11202.6
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% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 85.3%
LONG 2.8%
TAGS 0.2%
FIELDS 4.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.4%
COMMENTS 0.0%
Other 0.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 40.8%
2. First word of command is invalid 29.2%
3. FIND command with invalid index name 5.9%
4. Max. # of ports to a Z39 db are in use 4.1%
5. DISPLAY command contains invalid word 3.4%
6. NS of SHOW/EXP command-no next screen 2.5%
7. Valid command at an inappropriate time 1.5%
8. Search term missing from search command 1.3%
9. PS command - no previous screen 0.9%
10. Add-on search, no index name after verb 0.9%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.0%
2. Unrecognized term 11.2%
3. INSPEC DATABASES 9.9%
4. LOCATE (INS/PSY DBS) 8.7%
5. GUIDE (INSPEC DBS) 5.6%
6. INSPEC BACKFILES 5.6%
7. DATABASES 5.6%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 3.1%
9. DISPLAY (INS/PSY DBS) 3.1%
10. 1223 2.5%
11. All others 31.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.4%
2. First word of command is invalid 17.7%
3. DISPLAY command - middle of >1 screen 10.5%
4. FIND command with invalid index name 6.8%
5. FIND command with zero results 5.5%
6. FIND command retrieves >1 book 5.5%
7. DISPLAY command-first of >1 screen 5.1%
8. DISPLAY command-complete in one screen 3.8%
9. Multi-index search with zero results 3.8%
10. NS of SHOW/EXP command-no next screen 3.4%
11. All others 18.6%
Ten most frequent SHOW requests:
1. MAIL STATUS 24.2%
2. SEARCH 21.2%
3. HISTORY 21.2%
4. GLOSSARY 18.2%
5. INSPEC LOADING STATISTICS 9.1%
6. SETTINGS (INS/PSY DBS) 3.0%
7. INSPEC NEWS 3.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)