MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/01/00 through 06/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 139 2,599 2,738
Davis 227 22 249
Irvine 581 0 581
Los Angeles 125 1,086 1,211
Riverside 40 119 159
San Diego 300 971 1,271
San Francisco 68 0 68
Santa Barbara 126 651 777
Santa Cruz 34 259 293
Lawrence Berkeley 0 421 421
Lawrence Livermore 0 243 243
Los Alamos 0 0 0
Other - UC 6 233 239
Other-Network UC n/a 1,587 1,587
_______ ______ _____
1,646 8,191 9,837
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 5,830 14,634 135,379
INS90 1,427 2,647 18,286
INS85 1,083 1,942 11,118
INS80 780 1,373 6,837
INS69 717 1,618 13,168
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 195 504 3,981
2-4 a.m. 182 419 5,266
4-6 a.m. 211 534 5,189
6-8 a.m. 341 829 9,596
8-10 a.m. 992 2,417 15,962
10-12 a.m. 1,813 3,996 29,373
12-2 p.m. 1,562 3,389 26,190
2-4 p.m. 1,942 4,573 43,097
4-6 p.m. 1,421 2,910 22,616
6-8 p.m. 574 1,137 11,168
8-10 p.m. 340 821 6,820
10-12 p.m. 264 685 5,530
__________ __________ __________ _________________
Total: 9,837 22,214 184,788
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 266 6,015 6,281
Davis 548 74 622
Irvine 1,483 0 1,483
Los Angeles 233 2,231 2,464
Riverside 98 231 329
San Diego 952 2,188 3,140
San Francisco 167 0 167
Santa Barbara 257 1,719 1,976
Santa Cruz 84 547 631
Lawrence Berkeley 0 1,002 1,002
Lawrence Livermore 0 570 570
Los Alamos 0 0 0
Other - UC 23 544 567
Other-Network UC n/a 2,982 2,982
_______ ______ _____
4,111 18,103 22,214
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,604 50,127 51,731
Davis 5,395 3,654 9,049
Irvine 17,407 0 17,407
Los Angeles 1,673 23,627 25,300
Riverside 760 3,129 3,889
San Diego 4,187 14,802 18,989
San Francisco 1,263 0 1,263
Santa Barbara 2,417 17,665 20,082
Santa Cruz 350 3,046 3,396
Lawrence Berkeley 0 5,434 5,434
Lawrence Livermore 0 3,475 3,475
Los Alamos 0 0 0
Other - UC 473 4,536 5,009
Other-Network UC n/a 19,764 19,764
_______ ______ _____
35,529 149,259 184,788
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 6.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:46
Average session length (minutes:seconds) 12:43
Longest session recorded (minutes:seconds) 518:08
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 514.3
Retrievals per search - standard deviation 4874.1
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 7.0%
Percent of long searches completed
(includes partial results) 80.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 20,487 31.5%
DISPLAY (excluding automatic displays) 23,452 36.1%
BROWSE 19 0.0%
SELECT 1 0.0%
HELP 542 0.8%
EXPLAIN 829 1.3%
SET/RESET 5,920 9.1%
SHOW 202 0.3%
ADD ON (AND, OR, AND NOT) 1,727 2.7%
LOGON or LOGOFF 8,382 12.9%
COMMENT 0 0.0%
SAVE 1,047 1.6%
USE 25 0.0%
OTHER 2,435 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 9,598 42.3% 2,397 25.0% 14 68.4 265.6
TITLE WORD 4,301 18.9% 1,716 39.9% 6 146.3 2626.1
EXACT TITLE 74 0.3% 40 54.1% 3 45.4 114.8
JOURNAL 824 3.6% 335 40.7% 37 1774.7 7832.9
EXACT JOURNAL 151 0.7% 69 45.7% 45 2099.6 7952.9
SUBJECT 1,480 6.5% 466 31.5% 43 4602.8 13218.8
EXACT SUBJECT 69 0.3% 20 29.0% 11 1913.7 4354.4
THESAURUS 18 0.1% 2 11.1% 683 3914.9 4606.0
EXACT THESAURUS 38 0.2% 4 10.5% 589 888.6 1086.2
KEYWORD 4,464 19.7% 813 18.2% 26 1171.8 8505.9
SUBFILE 39 0.2% 16 41.0% 18 2289.1 10824.6
FORM 161 0.7% 24 14.9% 43 350.9 803.4
DATE 466 2.1% 96 20.6% 19 950.8 4537.6
ADDED 15 0.1% 8 53.3% 20 18.4 14.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 212 0.9% 38 17.9% 18 315.8 1186.3
CONFERENCE 75 0.3% 33 44.0% 290 418.8 492.5
LANGUAGE 20 0.1% 5 25.0% 38 47.7 44.8
CHEMICAL NAME 84 0.4% 52 61.9% 30 61.2 81.7
ISSN 3 0.0% 0 0.0% 788 809.3 756.2
ISBN 7 0.0% 4 57.1% 611 815.3 353.9
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 552 2.4% 153 27.7% 7 195.6 1328.8
EXACT PE 52 0.2% 7 13.5% 6 71.7 293.3
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 11 0.0% 5 45.5% 15 86.0 169.0
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 2,426 12.0% 916 37.8% 6 367.8 2748.7
Single 17,778 88.0% 4,433 24.9% 18 790.1 6151.0
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 17 89.5% 5 29.4% 2 54.1 88.0
EXACT THESAURUS 2 10.5% 1 50.0% 3 3.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.9%
SHORT 84.2%
LONG 2.7%
TAGS 0.6%
FIELDS 4.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 1.1%
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 45.6%
2. First word of command is invalid 27.2%
3. FIND command with invalid index name 7.0%
4. DISPLAY command contains invalid word 3.2%
5. PS command - no previous screen 1.9%
6. Search term missing from search command 1.5%
7. Valid command at an inappropriate time 1.3%
8. NS of SHOW/EXP command-no next screen 1.2%
9. DISPLAY command-record numbers too large 1.1%
10. DISPLAY command - no FIND results 1.0%
11. All others 9.0%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.7%
2. INSPEC DATABASES 12.8%
3. GUIDE (INSPEC DBS) 11.2%
4. INSPEC BACKFILES 8.8%
5. INDEXES (INSPEC DBS) 7.5%
6. LOCATE (INS/PSY DBS) 6.9%
7. DATABASES 3.6%
8. Unrecognized term 3.4%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 2.9%
10. 1752 2.7%
11. All others 25.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.3%
2. First word of command is invalid 13.8%
3. FIND command with zero results 6.4%
4. DISPLAY command - middle of >1 screen 6.4%
5. FIND command with invalid index name 6.3%
6. NS command - no next screen 5.1%
7. FIND command retrieves >1 book 4.7%
8. DISPLAY command - last of >1 screen 4.2%
9. DISPLAY command-first of >1 screen 4.2%
10. DISPLAY command-complete in one screen 3.3%
11. All others 20.3%
Ten most frequent SHOW requests:
1. HISTORY 69.7%
2. MAIL STATUS 7.2%
3. SEARCH 6.7%
4. INSPEC NEWS 5.6%
5. GLOSSARY 2.6%
6. INSPEC LOADING STATISTICS 2.1%
7. SETTINGS (INS/PSY DBS) 1.5%
8. SYSTEM NEWS 1.5%
9. SYSTEM6 NEWS 0.5%
10. PAGESIZE 0.5%
11. All others 2.1%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)