MELVYL ABI DATABASE TELNET STATISTICS
Time period: 11/01/99 through 11/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 112 641 753
Davis 187 3 190
Irvine 239 0 239
Los Angeles 23 334 357
Riverside 178 3 181
San Diego 37 60 97
San Francisco 61 2 63
Santa Barbara 55 41 96
Santa Cruz 172 27 199
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 17 33 50
Other-Network UC n/a 355 355
_______ ______ _____
1,081 1,509 2,590
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 52 224 2,240
2-4 a.m. 11 70 1,795
4-6 a.m. 18 60 951
6-8 a.m. 35 138 2,653
8-10 a.m. 225 639 7,113
10-12 a.m. 399 1,279 13,857
12-2 p.m. 428 1,302 16,615
2-4 p.m. 616 1,845 23,109
4-6 p.m. 394 1,258 16,848
6-8 p.m. 204 709 10,850
8-10 p.m. 134 495 9,431
10-12 p.m. 74 236 3,578
__________ __________ __________ _________________
Total: 2,590 8,255 109,040
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 357 2,119 2,476
Davis 508 5 513
Irvine 924 0 924
Los Angeles 75 1,163 1,238
Riverside 713 4 717
San Diego 86 226 312
San Francisco 214 6 220
Santa Barbara 117 115 232
Santa Cruz 514 79 593
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 38 38
Los Alamos 0 0 0
Other - UC 22 87 109
Other-Network UC n/a 882 882
_______ ______ _____
3,530 4,725 8,255
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,781 32,879 36,660
Davis 5,844 59 5,903
Irvine 7,911 0 7,911
Los Angeles 2,957 14,603 17,560
Riverside 8,311 152 8,463
San Diego 724 2,538 3,262
San Francisco 3,530 121 3,651
Santa Barbara 2,282 1,338 3,620
Santa Cruz 6,940 465 7,405
Lawrence Berkeley 0 44 44
Lawrence Livermore 0 186 186
Los Alamos 0 0 0
Other - UC 136 1,540 1,676
Other-Network UC n/a 12,699 12,699
_______ ______ _____
42,416 66,624 109,040
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.5
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 ABI Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:42
Average session length (minutes:seconds) 14:21
Longest session recorded (minutes:seconds) 226:27
Average number of searches completed per session 3.2
Retrievals per search - median 8.0
Retrievals per search - average 1387.4
Retrievals per search - standard deviation 12215
Percent of searches completed with 0 results 28.0%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 61.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 7,456 24.7%
DISPLAY (excluding automatic displays) 13,931 46.2%
BROWSE 63 0.2%
SELECT 8 0.0%
HELP 708 2.3%
EXPLAIN 650 2.2%
SET/RESET 1,018 3.4%
SHOW 208 0.7%
ADD ON (AND, OR, AND NOT) 797 2.6%
LOGON or LOGOFF 3,342 11.1%
COMMENT 1 0.0%
SAVE 1,098 3.6%
USE 13 0.0%
OTHER 914 3.0%
2.1 Article Text
_________________
DISPLAY TEXT commands 1,662
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 146
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 0
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 1,969 24.0% 455 23.1% 11 62.5 207.3
TITLE WORD 1,372 16.7% 475 34.6% 13 356.1 5246.8
EXACT TITLE 117 1.4% 59 50.4% 1 10.9 21.4
JOURNAL 381 4.6% 157 41.2% 510 4169.9 10817.1
EXACT JOURNAL 258 3.1% 96 37.2% 309 4451.5 9192.6
SUBJECT 1,010 12.3% 551 54.6% 460 8125.4 29587.6
EXACT SUBJECT 97 1.2% 56 57.7% 1,056 7622.8 17604.4
KEYWORD 2,154 26.3% 318 14.8% 70 2291.7 17303.3
PUB TYPE 22 0.3% 1 4.5% 185 961.0 1884.4
DATE 315 3.8% 66 20.9% 5 161.2 775.1
ADDED 6 0.1% 0 0.0% 15,411 12269.8 5996.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.0% 0 0.0% 5,047 12020.5 17533.4
GEOGRAPHIC NAME 11 0.1% 1 9.1% 53 3374.8 7739.4
SUBJ CATEGORY 8 0.1% 3 37.5% 360 18436.6 32646.1
COMPANY NAME 223 2.7% 67 30.0% 246 537.2 1037.6
EX COMPANY NAME 36 0.4% 4 11.1% 62 315.8 744.5
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 2 0.0% 1 50.0% 240 240.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 89 1.1% 15 16.9% 5 77.2 243.8
EXACT PE 23 0.3% 0 0.0% 3 5.4 6.4
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 97 1.2% 32 33.0% 42 3165.7 8797.6
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 756 10.2% 207 27.4% 7 917.5 7472.0
Single 6,640 89.8% 1,929 29.1% 38 2103.2 14636.2
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:
SUBJECT 59 93.6% 37 62.7% 4 17.7 29.0
EXACT SUBJECT 4 6.3% 1 25.0% 11 11.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 90.6%
LONG 1.1%
TAGS 0.0%
FIELDS 2.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 11.3%
Ten most frequent errors:
1. First word of command is invalid 34.1%
2. NS command - no next screen 28.5%
3. FIND command with invalid index name 9.3%
4. PS command - no previous screen 5.1%
5. DISPLAY command contains invalid word 4.0%
6. Valid command at an inappropriate time 1.9%
7. Search term missing from search command 1.7%
8. DISPLAY command-record numbers too large 1.1%
9. BROWSE command with invalid index name 1.1%
10. DISPLAY command - no FIND results 1.0%
11. All others 12.2%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 21.7%
2. FIND (ABI DB) 14.2%
3. LOCATE (ARTICLE DBS) 9.5%
4. INDEXES (ABI DB) 7.2%
5. COMMANDS (ABI/PSY DBS) 5.8%
6. MAIL 5.1%
7. Unrecognized term 5.1%
8. ABI/INFORM DB 3.4%
9. DISPLAY (ABI DB) 3.1%
10. ADDON SEARCH 2.2%
11. All others 22.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.2%
2. First word of command is invalid 17.8%
3. FIND command with invalid index name 7.1%
4. DISPLAY command-first of >1 screen 6.6%
5. FIND command with zero results 6.0%
6. DISPLAY command - middle of >1 screen 5.7%
7. DISPLAY command-complete in one screen 4.2%
8. FIND command retrieves >1 book 3.8%
9. NS command - no next screen 2.4%
10. PS command - no previous screen 2.3%
11. All others 19.9%
Ten most frequent SHOW requests:
1. SEARCH 38.8%
2. HISTORY 28.1%
3. MAIL STATUS 14.8%
4. GLOSSARY 5.1%
5. SETTINGS (ABI DB) 4.6%
6. MAIL SETTINGS 3.6%
7. SYSTEM NEWS 1.0%
8. ABI NEWS 0.5%
9. LOCATION 0.5%
10. GLOSSARY A 0.5%
11. All others 2.6%