MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 09/01/00 through 09/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 43 2,186 2,229
Davis 244 32 276
Irvine 471 0 471
Los Angeles 66 730 796
Riverside 30 78 108
San Diego 302 741 1,043
San Francisco 59 0 59
Santa Barbara 109 352 461
Santa Cruz 45 179 224
Lawrence Berkeley 0 253 253
Lawrence Livermore 0 184 184
Los Alamos 0 0 0
Other - UC 0 223 223
Other-Network UC n/a 1,108 1,108
_______ ______ _____
1,369 6,066 7,435
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 4,747 11,828 132,169
INS90 1,032 1,965 21,784
INS85 686 1,349 13,813
INS80 476 889 11,323
INS69 494 1,140 17,175
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 172 480 3,838
2-4 a.m. 145 323 2,687
4-6 a.m. 139 320 2,848
6-8 a.m. 277 660 4,507
8-10 a.m. 775 1,769 33,392
10-12 a.m. 1,301 2,801 57,503
12-2 p.m. 1,146 2,715 22,207
2-4 p.m. 1,389 3,359 27,426
4-6 p.m. 1,119 2,507 22,435
6-8 p.m. 417 984 8,946
8-10 p.m. 309 657 4,824
10-12 p.m. 246 596 5,651
__________ __________ __________ _________________
Total: 7,435 17,171 196,264
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 88 4,713 4,801
Davis 670 68 738
Irvine 1,341 0 1,341
Los Angeles 132 1,509 1,641
Riverside 78 164 242
San Diego 894 1,598 2,492
San Francisco 202 0 202
Santa Barbara 234 787 1,021
Santa Cruz 69 339 408
Lawrence Berkeley 0 771 771
Lawrence Livermore 0 488 488
Los Alamos 0 0 0
Other - UC 0 580 580
Other-Network UC n/a 2,446 2,446
_______ ______ _____
3,708 13,463 17,171
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 265 84,068 84,333
Davis 4,959 304 5,263
Irvine 15,020 0 15,020
Los Angeles 2,682 10,444 13,126
Riverside 247 12,589 12,836
San Diego 5,044 13,590 18,634
San Francisco 1,429 0 1,429
Santa Barbara 1,666 8,498 10,164
Santa Cruz 355 2,882 3,237
Lawrence Berkeley 0 5,133 5,133
Lawrence Livermore 0 3,514 3,514
Los Alamos 0 0 0
Other - UC 0 5,542 5,542
Other-Network UC n/a 18,033 18,033
_______ ______ _____
31,667 164,597 196,264
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
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 0.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:34
Average session length (minutes:seconds) 12:27
Longest session recorded (minutes:seconds) 1240
Average number of searches completed per session 2.3
Retrievals per search - median 7.0
Retrievals per search - average 381.6
Retrievals per search - standard deviation 7450.1
Percent of searches completed with 0 results 25.4%
Percent of searches entered that are long 4.9%
Percent of long searches completed
(includes partial results) 71.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 15,733 30.4%
DISPLAY (excluding automatic displays) 19,048 36.8%
BROWSE 42 0.1%
SELECT 6 0.0%
HELP 525 1.0%
EXPLAIN 734 1.4%
SET/RESET 4,181 8.1%
SHOW 134 0.3%
ADD ON (AND, OR, AND NOT) 1,438 2.8%
LOGON or LOGOFF 7,059 13.6%
COMMENT 0 0.0%
SAVE 666 1.3%
USE 19 0.0%
OTHER 2,224 4.3%
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 7,581 44.6% 1,680 22.2% 15 70.5 264.6
TITLE WORD 3,324 19.6% 1,353 40.7% 7 88.8 505.5
EXACT TITLE 89 0.5% 58 65.2% 1 19.1 56.3
JOURNAL 564 3.3% 204 36.2% 45 1995.0 7117.4
EXACT JOURNAL 108 0.6% 46 42.6% 115 1680.0 6213.4
SUBJECT 604 3.6% 189 31.3% 33 645.4 2495.7
EXACT SUBJECT 21 0.1% 1 4.8% 14 2521.3 5238.7
THESAURUS 9 0.1% 0 0.0% 355 3814.4 4903.4
EXACT THESAURUS 18 0.1% 1 5.6% 474 1754.4 2594.8
KEYWORD 3,241 19.1% 569 17.6% 30 1611.0 18320.4
SUBFILE 59 0.3% 16 27.1% 26 134.2 500.5
FORM 67 0.4% 12 17.9% 71 187.5 346.4
DATE 255 1.5% 63 24.7% 9 160.8 840.2
ADDED 8 0.0% 5 62.5% 12 12.3 7.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 217 1.3% 32 14.7% 26 754.9 5783.7
CONFERENCE 78 0.5% 34 43.6% 430 1032.9 1815.0
LANGUAGE 10 0.1% 2 20.0% 50 473.6 1144.0
CHEMICAL NAME 15 0.1% 7 46.7% 119 258.0 457.5
ISSN 4 0.0% 3 75.0% 1,484 1484.0 0.0
ISBN 4 0.0% 3 75.0% 127 127.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 657 3.9% 153 23.3% 6 68.6 330.4
EXACT PE 50 0.3% 8 16.0% 4 15.3 21.7
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 14 0.1% 5 35.7% 42 1046.7 2919.7
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 1,440 9.3% 487 33.8% 7 174.2 1044.0
Single 14,071 90.7% 3,461 24.6% 18 570.1 9370.7
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 42 100% 6 14.3% 2 9.0 18.5
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 83.1%
LONG 3.2%
TAGS 0.4%
FIELDS 4.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 5.2%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 44.8%
2. First word of command is invalid 26.7%
3. FIND command with invalid index name 6.4%
4. DISPLAY command contains invalid word 3.5%
5. PS command - no previous screen 1.8%
6. DISPLAY command-record numbers too large 1.3%
7. Search term missing from search command 1.2%
8. Valid command at an inappropriate time 1.1%
9. DISPLAY command - no FIND results 1.1%
10. Add-on search, no index name after verb 0.9%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.9%
2. INSPEC DATABASES 11.0%
3. GUIDE (INSPEC DBS) 9.8%
4. INSPEC BACKFILES 6.7%
5. INDEXES (INSPEC DBS) 5.9%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 5.2%
7. LOCATE (INS/PSY DBS) 4.6%
8. MAIL 4.4%
9. DISPLAY (INS/PSY DBS) 4.4%
10. Unrecognized term 3.1%
11. All others 30.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.9%
2. First word of command is invalid 14.1%
3. FIND command with zero results 7.1%
4. DISPLAY command-first of >1 screen 6.1%
5. FIND command with invalid index name 5.8%
6. DISPLAY command - middle of >1 screen 5.2%
7. NS command - no next screen 4.8%
8. DISPLAY command - last of >1 screen 3.5%
9. FIND command retrieves >1 book 3.2%
10. 3 HELP commands issued from same code 2.1%
11. All others 23.2%
Ten most frequent SHOW requests:
1. HISTORY 49.6%
2. SEARCH 11.8%
3. INSPEC NEWS 11.0%
4. MAIL STATUS 10.2%
5. INSPEC LOADING STATISTICS 5.5%
6. SETTINGS (INS/PSY DBS) 4.7%
7. PUBLICATION TYPES (INSPEC DBS) 1.6%
8. FORM NAMES (INSPEC DBS) 0.8%
9. GLOSSARY 0.8%
10. SYSTEM NEWS 0.8%
11. All others 3.1%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)