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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:0 H% t" m% m# L% }( _4 v0 r( q; z, O
to do-business , a; @2 X4 e% z6 ~3 J- e! N  A
rt random 360) W. q9 Z( l9 N7 T: o: z% d  C
fd 1
# u. c" u3 L" I& f( Q- w ifelse(other turtles-here != nobody)[
; L: Q; ^" \* i   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
6 N; O- A  h+ V- B$ |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 f8 k3 }7 k6 f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ i2 j4 c' m6 I- W4 l2 k, Q
   set [trade-record-one-len] of self length [trade-record-one] of self+ s. ?! |  c8 U- `' c
   set trade-record-current( list (timer) (random money-upper-limit))  L  W. h; t9 Y( ?  v/ I3 s- y
4 H0 k/ ]: h; B- P% p7 t
问题的提示如下:& Y4 Y' P4 m3 T3 }$ u
* Q, _; E, v2 e- \
error while turtle 50 running OF in procedure DO-BUSINESS
" e) E3 ]$ Q, U. m  called by procedure GO, M5 `3 C# N+ k5 R
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* Z5 n& d4 F+ O9 d- F3 F
(halted running of go)9 v: K$ k2 d, A4 ^

8 _# ?4 y" R  R* H+ K/ h这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
  X- ?9 j) `" [另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教, e# {! ]" Z7 {3 A8 z! M  L
globals[
5 a$ }# I9 X* r+ H1 jxmax
3 s9 w/ B& U8 |4 lymax
1 }3 {  E6 O$ G2 V3 K# x) ?global-reputation-list, X0 p" s; _7 R8 D! @( T8 ^: Z6 \

9 |/ I- p) E! X+ M/ Z8 X;;
每一个turtle的全局声誉都存在此LIST
; H& J3 ]' [% ]# F6 tcredibility-list
; }, p2 u, O" N& B- c1 X* r0 H# f;;
每一个turtle的评价可信度
2 s, H/ O; p. L+ n. S) V% i/ Xhonest-service
% r4 b- f0 J# ~unhonest-service7 |# ~9 m! M8 \4 h. n/ j- k" h. f% p
oscillation3 }; l. V6 M( Y# }  j- X
rand-dynamic6 o2 g$ _- @- H+ c  l& ~7 k: l3 o
]" @; o# G1 F; u) W- q  j8 p

, {$ J+ G- j- l* Q; F, R, Hturtles-own[. g4 N1 D& H( i7 Z! A. p5 O- B
trade-record-all( G* S' B4 V- A7 }
;;a list of lists,
trade-record-one组成
: k' H& w/ I5 G3 Ytrade-record-one0 a+ J# n1 }9 P, G& t1 h. g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  M; Y! D7 W' y# n$ S( [  b
+ R  A- k% R% X0 m
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
  E6 t7 m" ]! U  p8 U" dtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]3 ^3 Z! y0 b1 W) P
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
5 M1 k" w# r' `neighbor-total
" @* V4 w& {+ i5 I/ z5 u;;
记录该turtle的邻居节点的数目
& P6 C* I- a4 u! ktrade-time/ v3 m( l* q# o: E& t1 Y' M0 D% i
;;
当前发生交易的turtle的交易时间
* L% p7 B4 Y5 I% a( R( i( x2 Tappraise-give
1 Z% D7 U" v8 ]+ X8 `* l' L: ]* ?  l;;
当前发生交易时给出的评价( J8 x& |! n+ v. c( l
appraise-receive
: o7 G# L: N7 O3 q$ [" D;;
当前发生交易时收到的评价. H% a1 c0 x& U7 `
appraise-time
7 Y0 `0 e6 V' p) {;;
当前发生交易时的评价时间
& E1 m" ^" N9 n1 m+ K- c9 f! f8 M$ F5 Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 }6 m4 Q7 P. H9 r0 mtrade-times-total9 N' ~3 G5 B$ S. q( C: L
;;
与当前turtle的交易总次数
& z8 m" Y! P6 V9 `trade-money-total
) _1 i' {" ]; ^- r& ~) J5 f1 W7 f1 `;;
与当前turtle的交易总金额: w+ s6 j) S( {$ E
local-reputation
/ j% B5 y5 |- h7 d6 ^- Xglobal-reputation/ U; P8 h  y5 n5 \% j
credibility
& g0 o. S1 H1 W* d; b5 [9 S;;
评价可信度,每次交易后都需要更新* H4 K1 r( Y9 N! S7 P: X: f
credibility-all- D# X3 D/ |) q6 `' V3 {
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据6 B2 U* r+ X! y* b

$ d& O5 H8 v  ?2 g# a& W;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5; s$ O3 Y0 n# A  A
credibility-one9 M$ o. n& B! L& K7 i6 p  k- S
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people5 s0 M0 T( d- X' _. [: ]
global-proportion
5 l5 r9 T8 @! v  O3 J3 U" k  ncustomer
! k- V. d" H1 f6 Qcustomer-no
  \6 |8 p2 A4 b% ptrust-ok
# K. }* ~7 J' s0 D+ [) g& k  B& utrade-record-one-len;;trade-record-one的长度: e1 J, L$ `' i6 ^' W- U
]7 A- ]' M5 I$ L& P  E" x, @

. k, o( X% |4 I; e# n" U;;setup procedure( d1 h+ m/ i6 m$ x
% H) S2 C3 ^; d
to setup6 z# [* T! Q* U
: s+ j0 P! i6 v# i- k
ca
- v: t: }- n/ R$ D

0 e& {! P1 M" ]& c8 [: Minitialize-settings

0 n- U5 x* k2 E. J8 {0 R0 _& v: P! b) ~! C
crt people [setup-turtles]

: s# o# [9 {7 b+ y! i+ N
/ @8 q& o+ V" l  X, Yreset-timer

" K. C) M: y' Q5 {* i" U/ z* j# `5 _0 x/ ^* h: C
poll-class

  ^  {! ~- X+ t
) U) S6 A; x! p& O( Z' \6 L& i  X1 vsetup-plots

& |0 w# p! B; T8 c  u6 K, B0 k' J6 e7 \* p
do-plots

" W. N3 N- X4 Vend+ J( \) O. k1 M& D

/ c. j8 j# V7 l. A$ u, zto initialize-settings% I2 H# q# @& A/ j
% Y6 h  e+ H! e, x7 y' W$ f) L
set global-reputation-list []
3 @/ {, ?# G" b

; [( c0 J- d+ ^) X0 Xset credibility-list n-values people [0.5]
+ G' e1 u! h# ~3 ?# S

, K" \& I9 |6 h8 B: l6 v8 B1 ~set honest-service 0
4 O* {( E, ]5 U

. s/ s/ B9 D. Mset unhonest-service 0
, G; j: e0 ^) G& A

% v3 }( |& k' X3 V- d8 t( jset oscillation 0
, E4 T1 Z9 \6 F
% ]9 H- g: t8 R" A: B* x
set rand-dynamic 0

" ]* \4 m( Y! x. X8 ?' Xend
& @: p3 I( m5 k: B5 F. R* f" q% N/ x8 t% N7 M. t; Z
to setup-turtles - N# j8 d% n, |' ~
set shape "person"/ c# ~1 X, [7 l
setxy random-xcor random-ycor
" ]8 {  v+ X+ K; V1 i& @" |6 dset trade-record-one []/ ]2 w, f6 G9 B

1 e  z- o+ ], X  Uset trade-record-all n-values people [(list (? + 1) 0 0)]
. F0 T7 x# I5 X  K* m% Z

- v8 d7 W4 u: F5 s7 _set trade-record-current []. b+ h! z# V, a7 S8 u/ K9 M' `
set credibility-receive [], H: F/ P; F  G
set local-reputation 0.50 O  l1 c3 \; n  ~
set neighbor-total 0( X& p' y/ Y! W4 U$ Z5 M% W
set trade-times-total 0
5 w$ n/ Q7 d6 y* }5 t4 u( _set trade-money-total 0
- W. w6 Z2 Q( s3 rset customer nobody( O3 X8 T' J1 l+ \; {
set credibility-all n-values people [creat-credibility]4 `' P! i9 o5 g- O& E
set credibility n-values people [-1]
) {. s9 U2 }) U7 h$ e7 kget-color1 i) K7 ~! V! @' w) J

  }% A1 n! T8 u+ _8 Fend
+ c5 l' j# M6 m; ]4 p  o0 K# H, ?9 [* a/ |  {
to-report creat-credibility' c& D. ~$ g3 P' n' E
report n-values people [0.5]
9 h& I* `  Z9 `# Dend
$ E% p6 ^, H+ |% R* U- S  N1 y" w
8 T; ?1 M3 b2 ^; D. o2 x+ ?to setup-plots
/ T1 P& P* ]7 Z4 X& v: |  X6 K( a  x8 h6 t$ ]8 |8 e7 ~! Y
set xmax 30
! A& m4 U1 o( ^9 ^: ~

8 F* |9 W" P/ L4 ?- Jset ymax 1.0

/ f! I- g  G6 Y% o  x( Z
/ d4 _, ]. v; F9 \0 p9 O. qclear-all-plots
8 u2 w! P0 ~8 \; Y, P) a: r2 y

. [1 L$ N! `* L: }( c4 usetup-plot1
, c( o* d3 i7 F3 z. Z

( |- B% t1 E# T6 bsetup-plot2

( Y" C/ v; ?. W" U- M. p3 K
3 m- w5 T' Y! F7 Y8 ?4 ^2 b. rsetup-plot3
$ E/ I3 {, b8 N$ M- ]4 U
end
: f! i: }$ U+ J% |# K: h) Y9 N# Y( o. n6 h% I
;;run time procedures
0 f4 {2 h( f% k) Y4 J: K7 T5 }, j( x' q$ w
to go
' y3 a2 ?+ n6 d9 {! ^( F
9 K6 N1 I) N; r; p! n* Q8 Lask turtles [do-business]
! o$ n: p" l9 G% @) J& t1 _% s
end
. K, [9 V; }! c9 j- G1 r6 d
1 L) T9 r- V& A9 o8 P/ kto do-business 8 C; F3 V2 g& |1 F  z
' @0 S0 W) L; q* ~! u0 S0 z
% X) m3 m) c+ |) `; M/ n. ~2 M
rt random 360
; V+ s' s& d) {: r

+ j6 i. ^) Q0 ~( _  ffd 1
) n6 z; A, v6 @" e- N- S
5 z4 R8 o/ O+ M4 C; S
ifelse(other turtles-here != nobody)[

/ d% ~: W( i" u$ m0 O
# H" J+ l# N. }& @& kset customer one-of other turtles-here
/ j; C( j" a$ l+ p% ^5 m  ~

  L2 o. W7 i/ }) P- B! `;; set [customer] of customer myself
& \: f5 I$ v! B6 [' Q% L

9 K( u- K; v( ?' b# d. R* }4 [" fset [trade-record-one] of self item (([who] of customer) - 1)1 n" J9 j0 s  \2 u/ a
[trade-record-all]of self; N% z9 ?1 T$ D6 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# b. O- q( G& u7 U7 t6 v" E
" y7 e+ ?% \+ D, Q6 Yset [trade-record-one] of customer item (([who] of self) - 1)" L, q/ I$ o' l1 t" Q2 L. P& g
[trade-record-all]of customer

2 n. A& c( k3 \* A+ l$ k- P  Q% g9 ]* B7 q
set [trade-record-one-len] of self length [trade-record-one] of self
2 s% Z5 A- ?/ N5 i  n1 Q
2 o. V9 ^* v0 B5 z" L/ Q
set trade-record-current( list (timer) (random money-upper-limit))
* f7 e. X5 a! \. B

+ h# U3 Q7 W; \5 Xask self [do-trust]: R3 x. q; J" t/ Z7 t/ F; T
;;
先求ij的信任度% h4 F  m" j7 g
, m! G( P9 B" W8 ?" Q& {3 D
if ([trust-ok] of self)
6 @, P' O0 M2 R+ ^  r9 T9 m; k;;
根据ij的信任度来决定是否与j进行交易[7 B3 N) ~# g* v9 Y& O& _3 @' ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ w) B! Q" I# S5 G! n0 g) j
/ j8 D1 B1 s1 P$ N1 w[
: i4 M1 l# G3 u& {7 W4 ~

$ m% Q8 X: K/ C5 E2 H# sdo-trade
; ~  S1 ^; f2 F& b
3 r* x2 y- C/ d( d) F3 i
update-credibility-ijl

! E6 V5 ?8 E3 r) o& V5 o9 V- O  {: l% h0 ?& x: r% J
update-credibility-list
1 F/ P+ S% l& f5 y4 S7 `% Z

4 ?! n- g4 I9 ?8 m" q# W& P4 F$ g' y4 f* b/ R
update-global-reputation-list

% z3 C- N6 I; ~  c, R5 s2 I( D7 {
" M7 k% {5 _  A$ {poll-class

/ Y$ F2 E: S' e: F) k3 }3 W, k# o8 z. K+ C, B- Q5 t
get-color
0 v& Z8 a+ g, ~8 w5 L6 Z% i, q- g% b
( c* a1 i; k( K5 p
]]+ Y- y8 u# c$ [3 j% j" g! Y4 R

3 P6 c: s6 R5 S4 ]5 ~& T+ u9 Y;;
如果所得的信任度满足条件,则进行交易! j; w: U4 W5 ^: z
9 |3 c" O4 v2 Q4 e2 \
[
' F( e0 U: ]/ g+ _, S4 S

, V2 t/ [5 V+ k( w: Trt random 360

8 M% g. y5 J3 P! A; n9 W- k/ F9 `# X, u
fd 1
$ \5 d( e+ d) F, `3 T
& Z& `, v! Z' [: ]) n. I
]

2 J3 J7 q+ G! f, T" |/ [/ R. p  t+ B7 N1 w- p
end
2 f9 R3 T. Y( l4 L( w
1 }' h. w4 n8 G+ p1 o
to do-trust $ n6 W5 I9 ?: z" P
set trust-ok False
0 l+ [  n/ @( f; t; e
6 \: X+ G9 p8 h

0 h" |& l( Q! V% Z1 v* xlet max-trade-times 0
2 A2 R+ ^; D% S8 t8 d1 E, cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' L) l8 g/ k2 t3 l" Blet max-trade-money 0
6 U; \" X  G) o# g" ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 l. z6 P! L" Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 x9 Z1 z2 K+ A
, j5 x4 B! [7 G' T

' ]6 U; u/ @+ q8 xget-global-proportion
9 y$ @8 n1 d# ^7 Mlet trust-value0 z- g2 o2 J9 _1 t
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 `8 \( g# C( V4 R, eif(trust-value > trade-trust-value)( y" b6 ~  g! y1 p
[set trust-ok true]- I1 z% d- s6 {. Y* i8 T
end
# I0 N. D" h$ T; r+ @/ D! a, p4 w! {$ f* T
to get-global-proportion# \0 f7 ^( v* @# e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 a* Z$ d$ \, D- H[set global-proportion 0]
6 T* t5 E& v0 P5 y' I, v[let i 02 D$ M9 A2 g7 q1 w' x  h
let sum-money 0
' D  Z5 o$ x, X( i  v" f2 Pwhile[ i < people]8 Z% K0 r$ q2 N
[$ V3 h  g* N! |0 K
if( length (item i. I1 S. R" B. F6 d# t; L- |' K
[trade-record-all] of customer) > 3 )

" \" x+ I9 j) _* K[
3 s0 j2 D% l6 a& ?. k7 bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& y& w0 x0 U4 S3 d, r/ _
]: h0 v  a, ^- j4 K5 ]) z
]
+ d2 S; w% {' a2 ~let j 0) t  X/ \* N; e9 u" z, M5 _
let note 0
" L6 G- Z6 M$ Pwhile[ j < people]
) u* l9 l) M( ~, a! m1 y[! u$ P* P/ n. |; b
if( length (item i3 ~5 ?5 Y7 ?! j9 Z/ a2 y5 d
[trade-record-all] of customer) > 3 )
/ n, R9 p7 l9 Q. I/ `8 T4 o% H! ?
[, n+ P3 D5 c8 T" c7 m' L. r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# t% A" R: b/ [- g  l3 v
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 S7 _% R: O/ K2 V- J/ a5 [1 Q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 d+ o6 q4 X  z. B' V" V( r1 n]+ S; l  B+ j8 C8 X
]
7 t2 f1 W5 ?% c( @& aset global-proportion note, |! o* b9 d# i$ Z0 N
]
2 y& r: h- d& [4 a2 pend  I* [1 L( M* d- ^" ~. t+ s# P
7 [+ U# m) z1 H$ `
to do-trade3 V" q4 M# E/ g# V0 `" Z
;;
这个过程实际上是给双方作出评价的过程
8 Q; b/ p' S( _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& W* ]# {7 T8 {% mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: }2 A# a& o- V8 f
set trade-record-current lput(timer) trade-record-current( K- i  D* S- Y' m1 c, O8 v
;;
评价时间3 O0 \; `! A) `
ask myself [
1 T* d+ V: Z( V$ |2 f6 Z5 eupdate-local-reputation" }  \6 m# y7 j. s! X- z0 F9 i, v
set trade-record-current lput([local-reputation] of myself) trade-record-current5 M: Y1 I2 L$ U% U8 W1 H
]5 b% I. y6 w5 k1 G8 J1 J# E( e6 {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( X- z  ]+ y% k: ~' A
;;
将此次交易的记录加入到trade-record-one
8 {# s. u' G5 I. S8 ?6 @1 q. `set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 z5 o. \6 W* w% t
let note (item 2 trade-record-current )* F: k: v5 M5 o9 P# w( @. Z
set trade-record-current6 [# h' j5 Y; x  i/ z
(replace-item 2 trade-record-current (item 3 trade-record-current))

& l  V3 V. J) g+ i8 Q4 iset trade-record-current
6 C6 @) n0 p# m0 B" g% c(replace-item 3 trade-record-current note)& ]$ \8 z9 i: T( G( K) C8 N
, I! T$ ^4 t) X
* l, }2 l! G0 `  J! c! }' P
ask customer [
7 }$ G/ x0 X4 A- h" J- y) z' qupdate-local-reputation
. M' l# l% `8 i* d9 yset trade-record-current) T3 Q" y" F& _  q- }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: K& O8 Q/ R% H2 r]* q5 |' b. X) r( u

! V- f9 ~/ ~0 E. z8 a9 Z" w# G7 v
- j6 J0 |: ?# V1 P2 ?2 N
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 Q. l) K& b* r3 P7 ~
" [- |' K3 r9 ?. m, L) d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& W) X2 K( R9 x3 h9 M: [
;;
将此次交易的记录加入到customertrade-record-all
3 x# u/ m( B+ z7 O" |* L  mend
, f6 B* E  M% n& U) w( C( X" G/ Y9 ]- A* Q  f
to update-local-reputation9 I5 W9 Y  N7 p- ~/ ~
set [trade-record-one-len] of myself length [trade-record-one] of myself3 a; e5 N4 B9 k, R) [& t

  R& g. a" P  A
! `& ?2 B- I0 L% [  s6 s( f' I;;if [trade-record-one-len] of myself > 3
3 N+ q  d/ q# B0 t' j7 d( p
update-neighbor-total1 ?, }6 }  Q8 Y3 J" x
;;
更新邻居节点的数目,在此进行
" Z- t' r, |1 u' A7 R2 alet i 3
6 L5 \0 m0 f* @. `4 h( A3 [let sum-time 09 a( P6 d$ Q8 T. `% G
while[i < [trade-record-one-len] of myself]
/ _' V* _  _" C) L1 D' H0 t[
' }( }: \; A/ C2 tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 r' u# z8 n3 O( B+ Yset i! W$ ~( ^5 Z* A* F! O' w
( i + 1)
% K; T1 m1 G& w! `; D
]
' ?9 O8 z+ P: i! ylet j 3
$ Q; A: O1 T/ A& m: D3 S% V# Flet sum-money 0
+ C/ r8 N1 g8 I& t/ \3 j6 }while[j < [trade-record-one-len] of myself]& ^; ]% I" H! L6 h" A7 S9 `
[
! b9 t( r' t, S( nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
  I$ t5 A/ d; Z. T' oset j9 a2 H: ]1 \  d
( j + 1)

- r9 x0 x" |! m' P; Y. j$ w# {]
0 L; D' f, U+ ylet k 3$ w% r# \0 S; L+ g' h
let power 0
, Q3 |0 E( _4 ~# o9 ?$ qlet local 0
0 x$ ]$ ~+ h% i4 l) Gwhile [k <[trade-record-one-len] of myself]$ h  m' R; g- g2 [8 w
[
- {9 Y" y3 ~3 c) Dset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) - @8 _& G( U: s. J# R
set k (k + 1)" _0 d: p2 b" H
]
6 o$ N& Y& p0 N. B! `' Zset [local-reputation] of myself (local)7 u; ^# ~* O  Z9 w
end
& [* p* {6 q- q  E9 J8 {6 t. N
) o5 n3 V) i6 m, E  M0 Nto update-neighbor-total, Q2 W$ _: N+ n9 B0 d7 ~  k
& [0 n! c9 C, b) I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; o  @4 w' f) W
) W$ `6 N; B7 J+ r/ J3 j1 F
6 V0 d5 |  n- v9 r
end$ W& \& |2 q9 |9 @. h+ U
: O. B' S3 {. s* n) P* m4 L
to update-credibility-ijl 9 |( b' k1 G" A. n+ @

: \7 S8 ^; c2 K;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
+ J9 H7 ~3 i$ l9 p( W3 u( R) L, ylet l 0
& y% W4 C2 \7 p! ^3 Q- U+ ?" cwhile[ l < people ]0 M. |) Z% S% g4 Z7 S
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
' F, f- w2 B( t' M[
: i( u7 G8 G1 Q* F( g0 tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 j, V8 |( L, V" [1 S5 X
if (trade-record-one-j-l-len > 3)+ }! k- c# V, `# A2 b4 G$ I9 z
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
7 f9 N, B+ P! j9 w0 _let i 3
/ D# X- i$ W' a% `" Ilet sum-time 0  Q4 O, m8 y: n1 s8 R
while[i < trade-record-one-len]/ G- {4 i% k' k5 v& I8 V% h
[9 W; F$ {( c/ s9 D0 N7 O- m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& J6 t# x/ d% k0 t8 {8 H
set i8 K: N+ ^6 O+ s; @  ?
( i + 1)

5 X, K. [1 h6 N6 B/ e]
  Z, R8 y6 g0 G6 f% @& E  \! Clet credibility-i-j-l 0
# @+ M7 ~7 H" e3 x; x  f$ f;;i
评价(jjl的评价)/ ^9 }) T4 i6 l5 F0 x
let j 3: ?# a1 z3 o' R. |% q, B$ n
let k 4, K! q- U' s' f
while[j < trade-record-one-len]0 d; a: g( ^+ u* M/ p" b' p
[
. l8 o) N- o  M* P3 m" I" Pwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉( R% ^( M# y9 J! C! Y/ w; h6 q
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
+ ^- W- m$ S) `; c: Mset j4 J; ]! k* @$ W. o6 _" v
( j + 1)
2 \0 H0 N- R% k! L8 p7 W
]
5 y$ r5 T) W0 T3 Q9 a3 y" [set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))3 O1 j/ c' Q: y/ _( n
3 Y( R9 Z" ~! T, k
, Y4 O, V- v0 e, H3 [# |7 f
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); `# }/ j# o# T4 G+ L$ T/ i- C
;;
及时更新il的评价质量的评价$ A1 }) N9 i7 r0 k5 x" a, [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 D* R2 A; O/ u9 I. m4 V$ c2 Q" Aset l (l + 1)
8 |; M: ^5 [; S# Z( M( K. T8 c]
& P3 Y" r. p1 j: Cend
& f$ t2 ~% L7 K4 E
4 G! i" M* a: B/ C. o4 t$ Uto update-credibility-list' p5 r, N5 A2 J0 u3 N& _3 o5 ^
let i 01 C- p- V0 K7 q6 Q
while[i < people]
; M% o0 J; `5 R- P; B[0 k# Y# W+ t2 z
let j 0( n8 Y$ ?& H9 F) u; d
let note 0( T" i' n+ |! a1 ]4 v
let k 0
/ w  X  r; x  j" l' |- A) l;;
计作出过评价的邻居节点的数目
" p! I+ }" d8 {0 }" Hwhile[j < people]. |7 ?% s( D1 G" \1 {7 v2 s
[. r& w+ E8 c7 Y3 I8 r7 B
if (item j( [credibility] of turtle (i + 1)) != -1)5 U/ m9 ~1 d( P  w  D% i5 p
;;
判断是否给本turtle的评价质量做出过评价的节点0 @1 ]1 ^0 x$ e2 i3 s& ^" k+ d
[set note (note + item j ([credibility]of turtle (i + 1)))0 }4 n8 H7 C: O( m9 {9 P; _
;;*(exp (-(people - 2)))/(people - 2))]

4 K. A1 E' H, D6 O5 nset k (k + 1)
4 z$ i9 T5 w: x]
, L6 k. T% q# p* dset j (j + 1), K! Q+ ?4 r0 ]
]
) M0 O6 R# W" N$ pset note (note *(exp (- (1 / k)))/ k)$ B) z) Q. u" q) r
set credibility-list (replace-item i credibility-list note)" G0 S* B& ~- x
set i (i + 1)
7 S  }9 ?4 O$ Z8 D" [% J9 h]; ]1 d8 ]1 C6 a  t2 A1 s. t& _
end/ H' }7 ~3 h: ~* v3 W" W6 Q
' X& |  f; G8 P' T
to update-global-reputation-list
; [+ T9 ~, k' v# |* V, ilet j 0
7 m& R, `  r. Z8 F" {* u: i/ |while[j < people]0 u0 L# r0 I' r) h2 g& Q
[( E5 d1 Y2 ~: r' E
let new 0
% b( P! ^$ x5 a6 @  x4 c" C; z;;
暂存新的一个全局声誉
/ [& M& }# t& j  ]! Clet i 0
& M; t# A4 a; `" ^  U! T! hlet sum-money 0
, E; ~0 [" V8 F( r5 ?let credibility-money 0. A7 p8 D) d5 l
while [i < people]" E% J  `/ ?7 S$ G3 y+ w
[! L- [0 Q5 E& F4 k$ N% O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); ]! t9 n) k  W- ~5 F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 `! t5 @" _- q, r$ aset i (i + 1)3 [, K7 i4 @0 ?! V# f
]  e2 x. ?) ?" D8 d* W
let k 05 E$ _/ {9 ~! @, L7 W0 |% ]
let new1 07 `" r1 }/ \* h  k" `0 s
while [k < people]
+ N( [$ D3 P6 g% c+ g[
0 \  j& }( S3 K/ G7 b# G0 [5 e% ^- Aset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
$ G0 ^$ g/ I7 R7 Y% y7 g/ F+ s( wset k (k + 1)  |! D  K1 ~; _8 ~
]1 z* _+ d4 R. [" ~: I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 z8 G0 q9 b# k1 z; Z1 u; H7 p4 {set global-reputation-list (replace-item j global-reputation-list new)' c& p- V* _2 a9 s6 P2 M; U& ~
set j (j + 1)
) k% f) z& K7 Y7 J2 Z& N]  l8 h; E  h; ^+ N" z
end
2 [1 A6 S! [' G* _) o9 j
+ M0 _( k" R$ y: P$ A# d( J5 u$ ?% y1 s& @

* Q: y' y0 d" v1 }& ~8 Eto get-color, M2 m" K2 n9 _% [/ e# |

* ]" I" [( o2 t7 c! A! m9 w0 {) v5 Yset color blue
3 N2 H( Q6 w; p, l& z% E; j3 n( F- \
end
! ]1 Z* X& [" m% M9 B1 I& t' g# L
to poll-class4 d: b# l2 t9 q
end1 x4 _( }8 ?* z
. `# @9 e( a4 n; x0 [
to setup-plot1# E2 o5 ^7 U8 \4 I* U) Z
6 T" o) Q" c+ I3 G
set-current-plot "Trends-of-Local-reputation"
- @  `( e: ?6 Q$ f  q, G

, B& B1 {& W0 \set-plot-x-range 0 xmax

+ V  }+ Q' ?7 {/ S; W! a; F
/ W- u( h- b" X: h0 Wset-plot-y-range 0.0 ymax

2 L# s$ O% G$ r  a( gend+ ~& y( t1 T+ V2 E7 ]; h% N5 W$ I" ?0 a

4 k2 v3 q6 ]* `6 ~/ o! ]# fto setup-plot2
% D& V+ J2 b2 \7 c0 p) ~3 _6 ]8 H$ p
, I; q# `& E$ X3 ]3 Kset-current-plot "Trends-of-global-reputation"
6 P3 S- y- I: B$ ]
, Q$ g4 F% s' w9 |$ U) X
set-plot-x-range 0 xmax

- P( e$ z6 F3 i
# r- v. h( L3 r6 w( H$ s; Gset-plot-y-range 0.0 ymax

# E& E3 t8 f3 f( b7 T0 P) x4 wend
6 t0 N: J2 m% d$ |1 M1 J. z, [2 r* M2 W8 U
to setup-plot3
4 j. A0 J5 _7 H# A
, R9 o; `( s4 _1 K% z6 P) n: H( G4 O3 L( q1 \set-current-plot "Trends-of-credibility"

$ q& C7 t. Y0 v( i- K& }% z8 `
$ E4 e4 q& u9 Z) w! c3 tset-plot-x-range 0 xmax
. B& s# B. [- `% x" |) Z

# |9 `6 W' G5 I$ h' B6 Kset-plot-y-range 0.0 ymax

" H1 T) M/ r& s. }6 s1 Uend4 F- P, o* O8 m6 X

  Q0 |6 P7 c; D# bto do-plots
8 [5 ?( \8 C* D* q5 Uset-current-plot "Trends-of-Local-reputation", m. Q' \# b# @$ B- P9 @
set-current-plot-pen "Honest service"
6 A7 F0 R/ [: h( ]" H& P/ q. ]end% h% M% X# g5 y/ H# Y4 T. p5 |
  p% \9 L, Z, I# X
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
- L- q" L& P) l9 t& w4 W
+ S# Z9 W/ ?: X5 r9 E' a8 s这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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