MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 07/01/99 through 07/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 192 2,317 2,509
Davis 432 65 497
Irvine 1,030 0 1,030
Los Angeles 199 1,750 1,949
Riverside 40 159 199
San Diego 311 847 1,158
San Francisco 103 0 103
Santa Barbara 235 840 1,075
Santa Cruz 89 198 287
Lawrence Berkeley 0 501 501
Lawrence Livermore 0 946 946
Los Alamos 0 0 0
Other - UC 56 171 227
Other-Network UC n/a 1,842 1,842
_______ ______ _____
2,687 9,636 12,323
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 7,537 19,133 158,573
INS90 1,737 3,211 19,973
INS85 1,202 2,215 14,222
INS80 998 1,984 12,713
INS69 849 2,000 16,210
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 295 864 5,034
2-4 a.m. 174 544 4,069
4-6 a.m. 251 561 3,616
6-8 a.m. 402 888 6,188
8-10 a.m. 1,277 2,830 19,214
10-12 a.m. 2,084 4,454 31,919
12-2 p.m. 2,109 4,820 39,634
2-4 p.m. 2,449 5,682 42,549
4-6 p.m. 1,978 4,397 37,209
6-8 p.m. 631 1,713 17,097
8-10 p.m. 373 920 8,062
10-12 p.m. 300 870 7,100
__________ __________ __________ _________________
Total: 12,323 28,543 221,691
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 377 5,323 5,700
Davis 1,200 118 1,318
Irvine 2,466 0 2,466
Los Angeles 560 4,048 4,608
Riverside 99 458 557
San Diego 719 2,076 2,795
San Francisco 229 0 229
Santa Barbara 475 1,847 2,322
Santa Cruz 210 446 656
Lawrence Berkeley 0 1,123 1,123
Lawrence Livermore 0 2,248 2,248
Los Alamos 0 0 0
Other - UC 52 412 464
Other-Network UC n/a 4,057 4,057
_______ ______ _____
6,387 22,156 28,543
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,486 39,181 41,667
Davis 8,644 429 9,073
Irvine 21,100 0 21,100
Los Angeles 6,345 39,850 46,195
Riverside 517 2,836 3,353
San Diego 4,047 15,479 19,526
San Francisco 1,911 0 1,911
Santa Barbara 2,374 13,541 15,915
Santa Cruz 2,026 3,198 5,224
Lawrence Berkeley 0 10,972 10,972
Lawrence Livermore 0 22,444 22,444
Los Alamos 0 0 0
Other - UC 85 1,953 2,038
Other-Network UC n/a 22,273 22,273
_______ ______ _____
49,535 172,156 221,691
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 4.6
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) 7:14
Average session length (minutes:seconds) 12:10
Longest session recorded (minutes:seconds) 353:15
Average number of searches completed per session 2.3
Retrievals per search - median 6.0
Retrievals per search - average 385.1
Retrievals per search - standard deviation 5428.1
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 4.4%
Percent of long searches completed
(includes partial results) 60.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 26,228 31.1%
DISPLAY (excluding automatic displays) 30,204 35.8%
BROWSE 22 0.0%
SELECT 8 0.0%
HELP 871 1.0%
EXPLAIN 1,421 1.7%
SET/RESET 7,168 8.5%
SHOW 293 0.3%
ADD ON (AND, OR, AND NOT) 2,312 2.7%
LOGON or LOGOFF 10,993 13.0%
COMMENT 1 0.0%
SAVE 1,190 1.4%
USE 83 0.1%
OTHER 3,495 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 12,362 43.8% 2,952 23.9% 14 66.5 282.9
TITLE WORD 5,560 19.7% 2,151 38.7% 6 77.1 376.5
EXACT TITLE 90 0.3% 62 68.9% 1 3.8 6.2
JOURNAL 748 2.6% 310 41.4% 36 1328.6 5923.3
EXACT JOURNAL 140 0.5% 49 35.0% 139 1681.0 4965.6
SUBJECT 1,401 5.0% 469 33.5% 22 368.7 1227.5
EXACT SUBJECT 107 0.4% 17 15.9% 8 796.3 2633.7
THESAURUS 51 0.2% 11 21.6% 68 1188.8 2312.2
EXACT THESAURUS 10 0.0% 3 30.0% 490 888.3 1226.8
KEYWORD 5,858 20.7% 991 16.9% 34 1177.2 8050.2
SUBFILE 5 0.0% 1 20.0% 13 20.8 19.9
FORM 81 0.3% 16 19.8% 26 213.3 486.5
DATE 559 2.0% 111 19.9% 8 224.3 705.3
ADDED 29 0.1% 10 34.5% 16 46.9 102.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 301 1.1% 69 22.9% 22 220.6 915.7
CONFERENCE 123 0.4% 67 54.5% 73 464.8 1227.8
LANGUAGE 1 0.0% 0 0.0% 139 139.0 0.0
CHEMICAL NAME 140 0.5% 79 56.4% 6 305.5 1572.7
ISSN 5 0.0% 2 40.0% 52 62.7 34.3
ISBN 4 0.0% 2 50.0% 69 68.5 24.7
ID NUMBER 11 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 524 1.9% 131 25.0% 6 114.6 877.1
EXACT PE 108 0.4% 23 21.3% 3 11.6 22.2
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% 0 0.0% 83 3389.3 7945.8
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 2,403 9.3% 811 33.7% 6 123.9 602.9
Single 23,375 90.7% 5,888 25.2% 17 442.4 4422.3
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 22 100% 11 50.0% 1 1.9 2.4
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 88.0%
LONG 1.7%
TAGS 0.3%
FIELDS 3.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. NS command - no next screen 45.8%
2. First word of command is invalid 27.6%
3. FIND command with invalid index name 6.8%
4. DISPLAY command contains invalid word 2.6%
5. Search term missing from search command 1.5%
6. PS command - no previous screen 1.3%
7. NS of SHOW/EXP command-no next screen 1.2%
8. Valid command at an inappropriate time 1.2%
9. DISPLAY command - no FIND results 1.0%
10. DISPLAY command-record numbers too large 1.0%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.8%
2. INSPEC DATABASES 13.7%
3. GUIDE (INSPEC DBS) 9.6%
4. INSPEC BACKFILES 7.5%
5. LOCATE (INS/PSY DBS) 6.4%
6. INDEXES (INSPEC DBS) 5.4%
7. Unrecognized term 5.2%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.4%
9. DATABASES 4.2%
10. DISPLAY (INS/PSY DBS) 3.2%
11. All others 26.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.5%
2. First word of command is invalid 13.0%
3. FIND command with zero results 7.3%
4. NS command - no next screen 6.0%
5. DISPLAY command - middle of >1 screen 5.2%
6. FIND command with invalid index name 5.1%
7. FIND command retrieves >1 book 5.0%
8. DISPLAY command - last of >1 screen 4.9%
9. DISPLAY command-first of >1 screen 4.9%
10. DISPLAY command-complete in one screen 4.5%
11. All others 18.7%
Ten most frequent SHOW requests:
1. HISTORY 56.7%
2. MAIL STATUS 13.1%
3. SEARCH 10.7%
4. INSPEC NEWS 8.2%
5. SYSTEM NEWS 2.1%
6. SETTINGS (INS/PSY DBS) 1.7%
7. GLOSSARY 1.4%
8. DATABASES 1.4%
9. INSPEC LOADING STATISTICS 1.0%
10. MAIL SETTINGS 0.7%
11. All others 3.1%