MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 07/01/00 through 07/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 92 2,242 2,334
Davis 254 24 278
Irvine 456 0 456
Los Angeles 90 1,095 1,185
Riverside 29 88 117
San Diego 294 898 1,192
San Francisco 176 0 176
Santa Barbara 80 823 903
Santa Cruz 39 263 302
Lawrence Berkeley 0 337 337
Lawrence Livermore 0 199 199
Los Alamos 0 0 0
Other - UC 12 296 308
Other-Network UC n/a 1,391 1,391
_______ ______ _____
1,522 7,656 9,178
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 5,593 14,123 131,540
INS90 1,368 2,560 15,332
INS85 866 1,560 9,908
INS80 704 1,455 6,589
INS69 647 1,454 11,240
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 212 470 2,807
2-4 a.m. 218 485 3,729
4-6 a.m. 136 377 2,320
6-8 a.m. 311 701 6,612
8-10 a.m. 939 2,006 15,834
10-12 a.m. 1,619 3,570 28,601
12-2 p.m. 1,390 3,432 29,192
2-4 p.m. 1,807 4,304 36,519
4-6 p.m. 1,389 3,180 27,787
6-8 p.m. 549 1,185 9,815
8-10 p.m. 332 748 6,302
10-12 p.m. 276 694 5,091
__________ __________ __________ _________________
Total: 9,178 21,152 174,609
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 161 5,014 5,175
Davis 693 66 759
Irvine 1,588 0 1,588
Los Angeles 195 2,476 2,671
Riverside 70 228 298
San Diego 753 2,064 2,817
San Francisco 393 0 393
Santa Barbara 201 1,761 1,962
Santa Cruz 113 541 654
Lawrence Berkeley 0 879 879
Lawrence Livermore 0 430 430
Los Alamos 0 0 0
Other - UC 28 769 797
Other-Network UC n/a 2,729 2,729
_______ ______ _____
4,195 16,957 21,152
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,406 42,638 44,044
Davis 5,521 1,481 7,002
Irvine 19,852 0 19,852
Los Angeles 1,602 20,240 21,842
Riverside 226 2,233 2,459
San Diego 3,382 15,792 19,174
San Francisco 2,636 0 2,636
Santa Barbara 1,091 19,645 20,736
Santa Cruz 663 4,138 4,801
Lawrence Berkeley 0 6,314 6,314
Lawrence Livermore 0 2,818 2,818
Los Alamos 0 0 0
Other - UC 240 6,040 6,280
Other-Network UC n/a 16,651 16,651
_______ ______ _____
36,619 137,990 174,609
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 4.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:13
Average session length (minutes:seconds) 12:41
Longest session recorded (minutes:seconds) 291:18
Average number of searches completed per session 2.3
Retrievals per search - median 6.0
Retrievals per search - average 359.5
Retrievals per search - standard deviation 4651.5
Percent of searches completed with 0 results 26.0%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 71.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19,472 30.2%
DISPLAY (excluding automatic displays) 24,895 38.6%
BROWSE 7 0.0%
SELECT 1 0.0%
HELP 467 0.7%
EXPLAIN 773 1.2%
SET/RESET 5,420 8.4%
SHOW 172 0.3%
ADD ON (AND, OR, AND NOT) 1,680 2.6%
LOGON or LOGOFF 8,157 12.7%
COMMENT 0 0.0%
SAVE 1,023 1.6%
USE 17 0.0%
OTHER 2,389 3.7%
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 9,396 43.9% 2,207 23.5% 13 66.8 272.8
TITLE WORD 3,633 17.0% 1,387 38.2% 6 170.9 3574.4
EXACT TITLE 291 1.4% 161 55.3% 1 19.7 82.4
JOURNAL 727 3.4% 303 41.7% 85 3400.8 11462.1
EXACT JOURNAL 156 0.7% 62 39.7% 56 1672.8 4346.6
SUBJECT 670 3.1% 225 33.6% 19 866.1 9550.9
EXACT SUBJECT 55 0.3% 14 25.5% 16 1938.3 4597.2
THESAURUS 10 0.0% 3 30.0% 9,908 7825.0 3855.0
EXACT THESAURUS 5 0.0% 1 20.0% 147 167.5 98.4
KEYWORD 4,800 22.4% 926 19.3% 24 1105.8 9283.9
SUBFILE 55 0.3% 13 23.6% 11 27.4 40.7
FORM 141 0.7% 27 19.1% 29 562.5 2566.0
DATE 375 1.8% 91 24.3% 10 884.0 3605.0
ADDED 25 0.1% 15 60.0% 6 9.9 10.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 264 1.2% 69 26.1% 12 557.6 4985.8
CONFERENCE 63 0.3% 31 49.2% 168 845.8 1829.7
LANGUAGE 17 0.1% 2 11.8% 11 676.3 2493.8
CHEMICAL NAME 103 0.5% 47 45.6% 24 1141.3 6285.6
ISSN 16 0.1% 6 37.5% 716 1305.4 2090.5
ISBN 5 0.0% 4 80.0% 106 106.0 0.0
ID NUMBER 14 0.1% 6 42.9% 1 1.0 0.0
PERIODICAL 504 2.4% 118 23.4% 8 127.1 747.6
EXACT PE 66 0.3% 10 15.2% 4 12.5 22.5
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 13 0.1% 7 53.8% 27 49.8 59.4
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 2,128 11.1% 774 36.4% 6 422.5 4928.6
Single 17,088 88.9% 4,167 24.4% 16 519.7 5669.7
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 7 100% 4 57.1% 1 22.3 37.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 86.8%
LONG 2.1%
TAGS 0.7%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 45.4%
2. First word of command is invalid 26.1%
3. FIND command with invalid index name 6.6%
4. DISPLAY command contains invalid word 3.2%
5. PS command - no previous screen 1.6%
6. Search term missing from search command 1.4%
7. DISPLAY command-record numbers too large 1.3%
8. NS of SHOW/EXP command-no next screen 1.3%
9. Valid command at an inappropriate time 1.3%
10. DISPLAY command - no FIND results 1.2%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 15.9%
2. FIND (INSPEC DBS) 13.3%
3. GUIDE (INSPEC DBS) 9.8%
4. INDEXES (INSPEC DBS) 5.8%
5. INSPEC BACKFILES 5.7%
6. MAIL 4.7%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.1%
8. Unrecognized term 4.1%
9. DATABASES 4.1%
10. LOCATE (INS/PSY DBS) 3.4%
11. All others 29.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.5%
2. First word of command is invalid 12.0%
3. FIND command with zero results 6.5%
4. DISPLAY command-first of >1 screen 5.4%
5. NS command - no next screen 5.3%
6. FIND command with invalid index name 4.9%
7. DISPLAY command - middle of >1 screen 4.8%
8. FIND command retrieves >1 book 4.4%
9. DISPLAY command - last of >1 screen 4.3%
10. NS of SHOW/EXP command-no next screen 2.7%
11. All others 26.2%
Ten most frequent SHOW requests:
1. HISTORY 66.1%
2. INSPEC LOADING STATISTICS 10.9%
3. INSPEC NEWS 5.5%
4. SEARCH 4.8%
5. SETTINGS (INS/PSY DBS) 3.6%
6. MAIL STATUS 3.0%
7. GLOSSARY 1.8%
8. SYSTEM NEWS 1.8%
9. DATABASES 1.2%
10. SYSTEM5 NEWS 0.6%
11. All others 0.6%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)