MELVYL ABI DATABASE TELNET STATISTICS
Time period: 01/01/99 through 01/31/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 125 962 1,087
Davis 338 7 345
Irvine 379 0 379
Los Angeles 44 477 521
Riverside 178 11 189
San Diego 23 127 150
San Francisco 91 5 96
Santa Barbara 140 46 186
Santa Cruz 91 58 149
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 18 18
Los Alamos 0 0 0
Other - UC 2 23 25
Other-Network UC n/a 485 485
_______ ______ _____
1,411 2,223 3,634
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 48 188 2,651
2-4 a.m. 13 61 815
4-6 a.m. 29 130 2,213
6-8 a.m. 56 159 2,020
8-10 a.m. 313 841 15,529
10-12 a.m. 600 2,076 27,504
12-2 p.m. 678 2,372 35,686
2-4 p.m. 799 2,576 37,503
4-6 p.m. 564 2,035 22,958
6-8 p.m. 216 645 9,448
8-10 p.m. 195 753 8,741
10-12 p.m. 123 439 7,831
__________ __________ __________ _________________
Total: 3,634 12,275 172,899
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 462 3,572 4,034
Davis 1,097 9 1,106
Irvine 1,283 0 1,283
Los Angeles 108 1,687 1,795
Riverside 505 21 526
San Diego 113 518 631
San Francisco 281 11 292
Santa Barbara 546 176 722
Santa Cruz 267 184 451
Lawrence Berkeley 0 14 14
Lawrence Livermore 0 72 72
Los Alamos 0 0 0
Other - UC 1 38 39
Other-Network UC n/a 1,310 1,310
_______ ______ _____
4,663 7,612 12,275
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,667 60,255 67,922
Davis 10,938 129 11,067
Irvine 17,634 0 17,634
Los Angeles 1,417 25,641 27,058
Riverside 5,572 159 5,731
San Diego 1,594 5,760 7,354
San Francisco 2,682 139 2,821
Santa Barbara 7,967 1,980 9,947
Santa Cruz 4,198 2,232 6,430
Lawrence Berkeley 0 397 397
Lawrence Livermore 0 1,331 1,331
Los Alamos 0 0 0
Other - UC 32 228 260
Other-Network UC n/a 14,947 14,947
_______ ______ _____
59,701 113,198 172,899
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 1.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.4
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 10:24
Average session length (minutes:seconds) 15:27
Longest session recorded (minutes:seconds) 322:05
Average number of searches completed per session 3.3
Retrievals per search - median 10.0
Retrievals per search - average 1214.0
Retrievals per search - standard deviation 8226.3
Percent of searches completed with 0 results 27.3%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 62.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,906 24.1%
DISPLAY (excluding automatic displays) 22,270 49.3%
BROWSE 74 0.2%
SELECT 9 0.0%
HELP 849 1.9%
EXPLAIN 824 1.8%
SET/RESET 1,410 3.1%
SHOW 185 0.4%
ADD ON (AND, OR, AND NOT) 1,368 3.0%
LOGON or LOGOFF 4,698 10.4%
COMMENT 1 0.0%
SAVE 1,183 2.6%
USE 25 0.1%
OTHER 1,447 3.2%
2.1 Article Text
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DISPLAY TEXT commands 2,716
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 491
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 2,671 22.2% 672 25.2% 13 64.6 224.8
TITLE WORD 1,981 16.4% 712 35.9% 9 77.8 263.9
EXACT TITLE 146 1.2% 69 47.3% 1 12.5 25.6
JOURNAL 594 4.9% 214 36.0% 523 2704.2 6773.8
EXACT JOURNAL 389 3.2% 145 37.3% 771 3843.6 8181.2
SUBJECT 1,435 11.9% 740 51.6% 587 7944.7 23904.1
EXACT SUBJECT 111 0.9% 60 54.1% 289 2819.8 6054.5
KEYWORD 3,641 30.2% 538 14.8% 65 1824.1 9932.9
PUB TYPE 65 0.5% 6 9.2% 136 2273.5 6617.1
DATE 323 2.7% 70 21.7% 25 221.9 515.0
ADDED 9 0.1% 2 22.2% 12,708 10419.4 4882.9
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.0% 0 0.0% 19 19.0 17.0
GEOGRAPHIC NAME 30 0.2% 0 0.0% 387 1282.8 2570.1
SUBJ CATEGORY 14 0.1% 2 14.3% 494 26290.6 37614.9
COMPANY NAME 285 2.4% 88 30.9% 53 647.4 1206.3
EX COMPANY NAME 35 0.3% 12 34.3% 36 143.3 343.5
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 3 0.0% 1 33.3% 3 3.0 1.4
ID NUMBER 1 0.0% 0 0.0% 1 1.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 186 1.5% 36 19.4% 6 99.0 429.8
EXACT PE 54 0.4% 7 13.0% 3 8.1 12.8
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 1 0.0% 1 100% 0 0.0 0.0
Other indexes 75 0.6% 20 26.7% 100 1691.4 3487.7
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 1,179 10.9% 360 30.5% 18 279.0 1230.3
Single 9,634 89.1% 2,661 27.6% 36 1995.1 10698.8
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 63 85.1% 32 50.8% 2 8.0 15.2
EXACT SUBJECT 11 14.9% 5 45.5% 3 3.8 3.8
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 90.6%
LONG 0.9%
TAGS 0.0%
FIELDS 1.2%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 2.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. First word of command is invalid 34.0%
2. NS command - no next screen 29.2%
3. FIND command with invalid index name 9.0%
4. DISPLAY command contains invalid word 4.9%
5. PS command - no previous screen 4.4%
6. Valid command at an inappropriate time 2.0%
7. Search term missing from search command 1.7%
8. Add-on search, no index name after verb 1.3%
9. DISPLAY command-record numbers too large 1.3%
10. Command contains escape or arrow key 1.1%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 21.1%
2. FIND (ABI DB) 12.6%
3. LOCATE (ARTICLE DBS) 9.0%
4. INDEXES (ABI DB) 6.3%
5. MAIL 5.6%
6. Unrecognized term 5.3%
7. COMMANDS (ABI/PSY DBS) 4.6%
8. DISPLAY (ABI DB) 3.5%
9. ABI/INFORM DB 3.4%
10. ADDON SEARCH 2.8%
11. All others 25.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.7%
2. First word of command is invalid 16.5%
3. FIND command with zero results 9.7%
4. FIND command with invalid index name 7.5%
5. DISPLAY command-first of >1 screen 5.7%
6. DISPLAY command - middle of >1 screen 5.1%
7. FIND command retrieves >1 book 4.8%
8. DISPLAY command-complete in one screen 4.4%
9. NS command - no next screen 2.5%
10. PS command - no previous screen 2.3%
11. All others 21.8%
Ten most frequent SHOW requests:
1. HISTORY 37.4%
2. SEARCH 27.9%
3. MAIL STATUS 18.4%
4. MAIL SETTINGS 4.5%
5. GLOSSARY 2.8%
6. SETTINGS (ABI DB) 1.7%
7. ABI NEWS 1.1%
8. DATABASES 1.1%
9. IAC LOADING STATISTICS 0.6%
10. BIOSIS LOADING STATISTICS 0.6%
11. All others 3.9%