MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/01/00 through 05/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 72 1,469 1,541
Davis 184 29 213
Irvine 396 0 396
Los Angeles 69 629 698
Riverside 21 38 59
San Diego 185 565 750
San Francisco 66 0 66
Santa Barbara 86 291 377
Santa Cruz 60 129 189
Lawrence Berkeley 0 264 264
Lawrence Livermore 0 208 208
Los Alamos 0 0 0
Other - UC 19 118 137
Other-Network UC n/a 943 943
_______ ______ _____
1,158 4,683 5,841
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,652 9,010 74,952
INS90 848 1,522 9,160
INS85 528 931 5,689
INS80 431 745 4,681
INS69 382 841 7,609
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 109 264 2,669
2-4 a.m. 116 269 1,933
4-6 a.m. 132 288 2,635
6-8 a.m. 195 466 3,735
8-10 a.m. 646 1,340 8,391
10-12 a.m. 1,004 2,436 19,422
12-2 p.m. 972 2,162 16,186
2-4 p.m. 1,144 2,551 19,947
4-6 p.m. 857 1,862 14,627
6-8 p.m. 282 533 4,848
8-10 p.m. 216 439 4,332
10-12 p.m. 168 439 3,366
__________ __________ __________ _________________
Total: 5,841 13,049 102,091
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 151 3,568 3,719
Davis 511 54 565
Irvine 931 0 931
Los Angeles 138 1,291 1,429
Riverside 53 63 116
San Diego 527 1,210 1,737
San Francisco 149 0 149
Santa Barbara 248 592 840
Santa Cruz 176 300 476
Lawrence Berkeley 0 533 533
Lawrence Livermore 0 439 439
Los Alamos 0 0 0
Other - UC 32 276 308
Other-Network UC n/a 1,807 1,807
_______ ______ _____
2,916 10,133 13,049
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 824 27,486 28,310
Davis 3,831 548 4,379
Irvine 11,467 0 11,467
Los Angeles 2,492 10,103 12,595
Riverside 105 1,388 1,493
San Diego 3,319 9,988 13,307
San Francisco 1,510 0 1,510
Santa Barbara 988 4,688 5,676
Santa Cruz 722 2,322 3,044
Lawrence Berkeley 0 4,078 4,078
Lawrence Livermore 0 2,648 2,648
Los Alamos 0 0 0
Other - UC 286 1,923 2,209
Other-Network UC n/a 11,375 11,375
_______ ______ _____
25,544 76,547 102,091
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:32
Average session length (minutes:seconds) 12:44
Longest session recorded (minutes:seconds) 589:06
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 277.5
Retrievals per search - standard deviation 3294.0
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 72.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,061 30.8%
DISPLAY (excluding automatic displays) 14,008 35.7%
BROWSE 10 0.0%
SELECT 1 0.0%
HELP 378 1.0%
EXPLAIN 589 1.5%
SET/RESET 3,309 8.4%
SHOW 147 0.4%
ADD ON (AND, OR, AND NOT) 988 2.5%
LOGON or LOGOFF 5,351 13.7%
COMMENT 0 0.0%
SAVE 703 1.8%
USE 18 0.0%
OTHER 1,649 4.2%
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 5,936 45.0% 1,382 23.3% 14 64.1 246.7
TITLE WORD 2,534 19.2% 969 38.2% 7 84.2 314.5
EXACT TITLE 59 0.4% 30 50.8% 2 31.6 81.8
JOURNAL 430 3.3% 167 38.8% 130 2486.7 9731.7
EXACT JOURNAL 71 0.5% 24 33.8% 7 2230.2 7449.4
SUBJECT 503 3.8% 174 34.6% 29 583.3 2133.7
EXACT SUBJECT 86 0.7% 24 27.9% 10 916.3 3025.1
THESAURUS 14 0.1% 1 7.1% 108 2306.6 4174.7
EXACT THESAURUS 26 0.2% 2 7.7% 374 572.5 499.1
KEYWORD 2,657 20.1% 467 17.6% 27 829.3 6905.0
SUBFILE 4 0.0% 0 0.0% 869 1672.3 2304.8
FORM 80 0.6% 7 8.7% 49 284.9 724.5
DATE 206 1.6% 44 21.4% 18 918.4 2692.9
ADDED 9 0.1% 3 33.3% 2 1.7 0.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 87 0.7% 16 18.4% 31 150.6 651.6
CONFERENCE 58 0.4% 19 32.8% 182 742.9 1372.2
LANGUAGE 9 0.1% 2 22.2% 7 67.9 113.7
CHEMICAL NAME 98 0.7% 16 16.3% 565 2569.4 4721.2
ISSN 8 0.1% 7 87.5% 2,183 2183.0 0.0
ISBN 3 0.0% 2 66.7% 19 19.0 0.0
ID NUMBER 5 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 274 2.1% 74 27.0% 8 100.3 406.0
EXACT PE 26 0.2% 1 3.8% 5 8.4 9.0
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 16 0.1% 8 50.0% 8 1281.0 3453.2
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 1,280 10.8% 423 33.0% 6 285.0 1409.1
Single 10,609 89.2% 2,588 24.4% 18 406.8 4135.9
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 10 100% 3 30.0% 1 10.6 24.4
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 86.8%
LONG 1.6%
TAGS 0.2%
FIELDS 3.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.0%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 47.4%
2. First word of command is invalid 26.5%
3. FIND command with invalid index name 6.9%
4. DISPLAY command contains invalid word 2.4%
5. PS command - no previous screen 2.1%
6. Invalid SET DB INS command issued 1.5%
7. Search term missing from search command 1.4%
8. NS of SHOW/EXP command-no next screen 1.3%
9. DISPLAY command - no FIND results 0.9%
10. Valid command at an inappropriate time 0.9%
11. All others 8.6%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.8%
2. INSPEC DATABASES 10.5%
3. INSPEC BACKFILES 9.7%
4. GUIDE (INSPEC DBS) 8.8%
5. LOCATE (INS/PSY DBS) 8.7%
6. INDEXES (INSPEC DBS) 6.3%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.2%
8. MAIL 3.9%
9. Unrecognized term 3.2%
10. DATABASES 3.2%
11. All others 27.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.3%
2. First word of command is invalid 13.9%
3. DISPLAY command-first of >1 screen 6.3%
4. FIND command with invalid index name 6.1%
5. FIND command with zero results 5.8%
6. DISPLAY command-complete in one screen 5.8%
7. DISPLAY command - middle of >1 screen 5.1%
8. NS command - no next screen 4.6%
9. FIND command retrieves >1 book 4.0%
10. DISPLAY command - last of >1 screen 3.3%
11. All others 20.9%
Ten most frequent SHOW requests:
1. HISTORY 51.4%
2. MAIL STATUS 18.6%
3. INSPEC NEWS 9.3%
4. SEARCH 7.1%
5. SETTINGS (INS/PSY DBS) 6.4%
6. INSPEC LOADING STATISTICS 3.6%
7. GLOSSARY 0.7%
8. SYSTEM NEWS 0.7%
9. MAIL SETTINGS 0.7%
10. LIBRARY LOCATIONS 0.7%
11. All others 0.7%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)