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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:  w0 `. q, Y6 s* N) f' s
to do-business
' \( w" R4 k9 f rt random 360
9 c5 C/ \5 r% P3 T" s fd 1, ?3 a% S1 h9 g7 _3 Y
ifelse(other turtles-here != nobody)[
, V8 R* K/ I! j+ J' e8 |, O   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.
+ T: D7 y$ h* E, @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 W: D6 j" s! N% V$ m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% t( r2 i: x9 c/ s   set [trade-record-one-len] of self length [trade-record-one] of self
. A4 p0 t0 B- v/ d0 Q   set trade-record-current( list (timer) (random money-upper-limit))
0 t) [) U6 |$ P7 C4 P
0 T' j& J! T+ `/ p) |) n* p- B问题的提示如下:& E6 T/ g7 J3 W0 w0 B
  T$ V; G# k. \8 |  W, o0 J
error while turtle 50 running OF in procedure DO-BUSINESS1 P9 O8 f; D! F: a
  called by procedure GO1 Q9 S6 f  v2 X. `0 m. H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 ?4 l; S( m# B. |
(halted running of go); L  ~! c1 y$ K. b  J
; o: b& H7 P9 J9 Z/ m; g6 `
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~~& _# A+ m+ t$ h6 s! n' D
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
/ a2 l* r8 \0 k' Gglobals[# g; [/ W1 s. r! w" ^# I7 a" o
xmax8 {) b. P0 {& g8 n+ P3 U  |" j# n
ymax/ O$ u- i% c+ \' Q4 @: d
global-reputation-list
: A- R$ M5 z/ c8 O$ M6 W+ P+ |9 K3 {& U4 j( _. a) t: @
;;
每一个turtle的全局声誉都存在此LIST
* ~" f: `$ ^5 s9 a! H; N+ S) Ccredibility-list3 h4 V3 v/ k7 _" d" S1 [- t
;;
每一个turtle的评价可信度3 k% M% e0 ?* r  l3 U
honest-service
/ Y" F* S% g0 F( |% k) Zunhonest-service# t( a0 J- D9 [( \* g4 o
oscillation5 O6 m6 ?9 i: R& l' s5 j" ]
rand-dynamic2 U0 a% T; c1 @" d
]
( d; {% e; L( l# i' G8 T% J( A
# v" o; K1 s9 u; c  O8 _9 F9 Vturtles-own[% d2 x* C! U6 ?" q$ j% S
trade-record-all; d; k# ?! l% `" q" `/ d3 J9 [5 X
;;a list of lists,
trade-record-one组成$ ]" ?% K5 d$ J; Z, F! @# S" b9 T$ z
trade-record-one
/ ]1 n- n0 M5 x& {5 y" k- x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# r' z: U0 W* n! N" x/ |. r% L$ ~( L

/ G' ]& ]/ i& s6 A9 E5 ^;;[
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]]% d& a$ p; B' h
trade-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]
+ j) K2 o- W! i2 `! [3 Pcredibility-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! @, p- ]0 }% w9 f9 D
neighbor-total3 H1 \' U) t1 ~- U1 z' m
;;
记录该turtle的邻居节点的数目
6 x; v3 W: s$ d1 A  Utrade-time
% |/ T2 ?0 v9 m! u2 g;;
当前发生交易的turtle的交易时间
: Q/ d& _! S, b: r1 rappraise-give4 @+ i- e& d& ^: ?. o2 v4 O
;;
当前发生交易时给出的评价
8 M/ B& X/ v# N7 Uappraise-receive$ T/ z( g" ^3 V: a
;;
当前发生交易时收到的评价& Q9 b; ^$ a- t7 |. f: w
appraise-time$ D' s1 r+ ~% w/ |5 x
;;
当前发生交易时的评价时间# k( I8 b4 A" Y) V  A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" P3 ]. x& w3 L
trade-times-total; |5 e1 D4 i, n# [
;;
与当前turtle的交易总次数
. ?9 x$ |( }, v) [3 ^3 ?' v" Ftrade-money-total, t) k. F( l3 j9 V
;;
与当前turtle的交易总金额
+ L- Z6 q9 ]" Hlocal-reputation5 j7 \7 F& d/ r- R# X2 l
global-reputation
3 Y1 K' [' b# s$ n! ~& J- h6 c$ N( @credibility4 G, Q: U/ u2 ]4 Z
;;
评价可信度,每次交易后都需要更新
' [- _) f7 ?2 w) ycredibility-all9 a( W: V" Q& e9 f- w
;;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
8 J. b: @9 H# d! p* U; `3 |0 [. e) ]4 V8 W7 ~
;;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0.59 }/ v0 b. F! i, I; o# B" H0 ^
credibility-one
+ U* |$ `( W& I; Q! [; c; a) N;;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people
/ y, M" v3 W$ Y' `( ^& Yglobal-proportion
/ m( X) d4 t$ f. X4 ?: {" i' Zcustomer
3 |* P7 h, U( W) D3 R3 X8 Z5 Scustomer-no
2 G4 D3 M9 e6 Xtrust-ok5 L7 {2 M$ P/ U0 V5 P8 a! S5 G
trade-record-one-len;;trade-record-one的长度1 O; r$ ]0 i8 X* ~) e
]
) n* n) H1 v: }& ?
1 ?1 {4 b! _( \3 ^) a8 E;;setup procedure! M$ B0 d. }# K4 K- K5 \& u
$ e5 s! O) N2 c/ f0 n% u" F
to setup/ y5 R& X' |4 O, H, D
% ]8 {3 R$ m  n- E
ca
2 T3 B- A. v  L+ d. O
# b1 X% v  ~9 S3 s
initialize-settings

, q0 e' ~7 J  g% b4 _* k
9 Z9 E" J# e5 q  J! acrt people [setup-turtles]

# _/ ~# p  l3 g) F5 K6 F) `& h1 q+ e8 Q% k5 d8 L- C
reset-timer
7 V% _7 \) {4 w: ]
! I: Q% g6 y. d' y/ e
poll-class

2 O1 s9 r. y( d9 `7 w
  Q- g" v; M; h$ D: [. s) bsetup-plots

6 N  d" H3 G6 H4 M/ `- G3 V( U* }; Z0 T. R) U+ N$ V
do-plots
6 j2 Q1 |% S% M! s& F0 p$ Q
end# q8 F/ t* Q/ D0 U# v

& O" x: [6 g$ U1 Pto initialize-settings: f4 S! L- W2 j1 O, A& q, N

0 `# \% [* x9 Y3 o4 aset global-reputation-list []

3 d6 d( h! |  P4 G8 e4 b" h+ `5 F! p$ E6 N. g
set credibility-list n-values people [0.5]

' Q+ v* p" e& ]9 e+ t
" c7 i! S4 K- k+ G/ n  ?/ \set honest-service 0
7 H" f+ `0 G# M; y3 R
0 t. ?2 \. V% w2 {; _4 ?
set unhonest-service 0
" _3 r+ U1 w. l
  R/ d& ?2 Z( w: V9 ]; Y" e3 G
set oscillation 0
: @7 P' i0 u1 _; c& J( G! V' W
# E' _: p3 K0 Y" t
set rand-dynamic 0
( T8 p# D$ p9 Y  ^5 l: E9 \4 H, C
end
# [- |2 ?  B5 v# r+ f- H' V
% `$ w( c0 R* @* Q3 G9 d$ Uto setup-turtles . U, ~8 L  d- D3 I
set shape "person"
' R) u/ b: K6 @- [& t  X8 dsetxy random-xcor random-ycor
( i9 @7 {: p" P5 Hset trade-record-one []
7 R# y" \  J3 U: I$ ?' D
* {9 ]5 J2 f. L5 H" f
set trade-record-all n-values people [(list (? + 1) 0 0)] : b" R7 @' d3 z. V

" I  m; m: r# p. u6 bset trade-record-current [], f$ A2 U; Y- X% ]* j& o
set credibility-receive []
# P' s- a/ {) @4 X! }set local-reputation 0.5( R) x. }, _1 w# W& G
set neighbor-total 0! _3 O' j& d% o/ }
set trade-times-total 0
; ?; ?% {3 e; Q' K+ Nset trade-money-total 0, `/ I% Z* X" I  {
set customer nobody
8 e5 s% {3 e* j' X9 ~3 o. ^set credibility-all n-values people [creat-credibility]& h+ w5 C" M. V" G4 [! }
set credibility n-values people [-1]+ V- K/ F- Y- G1 P0 f
get-color- G- z5 u) v6 A1 \9 c' ^6 q

& _5 Q7 \% L. dend+ u% `* Q. c6 G. n2 t) \) L

3 L' C7 h: y( {to-report creat-credibility
: u. F) ]8 w4 Q) U  W! L/ creport n-values people [0.5]$ m5 {5 K, b$ u. D
end, y' U" P+ y% W

1 Y6 S2 ]# y: l1 B0 C. M$ uto setup-plots
  |) ^. y. \7 h; Z: o1 u: K
( K% h% u+ K/ t8 cset xmax 30
" k# j' r% ~+ Q0 L$ X  o

: z7 _: p7 ?& ~8 `set ymax 1.0
5 D; L% M% r( }6 |9 e1 m$ ?9 D5 R) p

( z8 h$ ]8 J# X. o  ]clear-all-plots

* W6 v4 k* b8 H: U
+ O7 M  v6 P; K- N, H7 Ysetup-plot1

8 c/ @5 h5 q: ]4 Z. i$ b0 M! c+ z  l/ r$ {
setup-plot2
9 N" a/ u3 c$ ~
3 _" P" Y' Q9 E  |
setup-plot3

' b' Q' [& N' f- T! `) n+ aend/ O4 g4 T" k1 C6 r' A
; `( B# N3 y! w/ |# [/ Z* P
;;run time procedures
) t; C. o" X4 P( e, [& t: O1 ?- L, y. I9 ?9 Q$ A6 C; }. B
to go& Y' A  p: t3 `
) c  p+ ?  h7 e
ask turtles [do-business]

7 _  W5 d+ z8 y0 w! e+ {7 Q- Oend
% R# W- l' Q/ q* p& ]0 f& f
8 r5 |* Q; @( I6 ^8 k$ k4 Uto do-business 6 _# a! f& v# u+ d0 }

: w. k( o  [: |. m% X/ Z( D* `' G' M0 p6 @
rt random 360

6 i4 s* M' q- n3 |5 G  k) D' s; p% e" l% D' {) E7 q
fd 1
& \5 O& l' J2 M. q* y

, \$ }, V" |+ ^6 j- yifelse(other turtles-here != nobody)[
# D5 q5 y6 S' W& U

% n+ d* L9 L2 \# eset customer one-of other turtles-here

8 I3 Z6 x2 J' }5 f
7 J0 w7 s) j# U3 F! C9 f% w;; set [customer] of customer myself

" C7 x: ]! o% K' I1 @$ O: W! |: O% e( ]
set [trade-record-one] of self item (([who] of customer) - 1)
( P# s. t5 C+ w* S4 ^, J9 A) t7 q[trade-record-all]of self
9 t% J$ p) B7 O& ?! b$ A; z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. h' X7 ~! [# w8 M8 m" ^6 Y

+ ~9 Y* A6 H( T9 B" hset [trade-record-one] of customer item (([who] of self) - 1)* j8 L$ L! {$ d3 z& _- d4 ~
[trade-record-all]of customer
. }, }4 _3 s% A) `- m
! ]1 j0 @1 G$ \/ c) z
set [trade-record-one-len] of self length [trade-record-one] of self
6 ]( _* O/ d5 ]# F
$ e# d& s+ {7 l
set trade-record-current( list (timer) (random money-upper-limit))
- C: ]* _0 W, ?9 ~
7 z7 r+ |% Z1 E) @+ U! B
ask self [do-trust]# n1 R3 Y* W" z( T8 ~/ O
;;
先求ij的信任度
2 f$ O% k  q( c. S/ s7 Q  i6 ~; J  x
if ([trust-ok] of self), d* T4 Q6 M  t9 t! _) a$ `
;;
根据ij的信任度来决定是否与j进行交易[2 ?! U- N5 {' ]* ]6 k/ Q: D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- L& m) t6 k1 s: a  g
+ X; B. G* R8 g9 c5 k" Y[

6 U* T: y- F- \2 d, Y; f* d; ]
  o- o0 U" V2 k! Rdo-trade

0 `3 g$ S! p) K) ~1 ]. P* ]9 ~
* _4 ^# M0 ^" k! j- lupdate-credibility-ijl

: M) q" b3 I3 x7 ~% W
3 z0 p9 i, b  L$ P/ m+ gupdate-credibility-list& [% O% \2 ?$ R9 b; ]

0 s4 u( f. i; }9 Y! B6 S% \* ]8 p& ]" S- `! i6 j, K* Z' s2 z
update-global-reputation-list

1 u; {4 `$ V% K5 H: M- B* I
- q+ w' l7 ]7 A0 zpoll-class

! @. R- [1 }7 f& R! a
3 u! A" Z5 U/ E4 j: I& n( ^) J& D% aget-color

! E8 {' r$ b- w2 |/ q6 ?) X" i, I" ^; O" g6 s2 N
]]
9 |$ u* o7 H3 F$ b( K+ w/ y4 }+ h3 y2 Q$ f# B
;;
如果所得的信任度满足条件,则进行交易! X$ F; T6 e& x& C
( F0 h% [0 e; z/ t
[
1 L9 L  B* c3 j! A1 o7 B! Y

1 v6 w0 N4 o7 N, Ort random 360

" O% B6 T* O. w& f' r! O2 E* }- T$ L3 M1 k) a7 \: d
fd 1
* {- X; F: A8 |) S
7 g# a5 m$ ^* Y  y
]

3 p  q* h% p; p
8 ~+ T1 S2 y3 O: |end
6 Z3 r/ s, O( E( N1 u5 V5 Z

5 [8 \; Z' N0 X! v) N) G# k" V4 {to do-trust 0 |5 a9 ?" j- I# Q9 D
set trust-ok False
- a4 H# r* ^0 a) g! H) n, f$ [$ M$ g  k1 Y& r* \* l

( |: c3 t3 f& F" h1 \( `" ]- ?let max-trade-times 03 R3 I- A0 F4 {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 H) U7 }; T1 T1 @
let max-trade-money 0
# T# o2 j/ A1 R" c. lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; n; O: x* h1 w1 U# A) ?. d  x* g) F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 o) x. w6 \6 b" C- z
2 a' Y/ N# Z4 Y) a. `( O
4 w7 A% X) ~9 W: V" M
get-global-proportion2 j9 m* S. X5 W4 }& o
let trust-value! e/ w# |, X! W9 a5 b7 B
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)

3 a" i5 Y7 m& l1 Iif(trust-value > trade-trust-value)
" r) ^* B, F% `5 f3 e# Q[set trust-ok true]
! I' H) I3 U0 a6 h9 gend1 y1 j9 F9 }5 k3 I- z* y
  h% |) E4 j; }
to get-global-proportion
" K1 {6 p# U: ^- X' \' w* gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 f! U, m0 W9 p" }
[set global-proportion 0]$ P( {+ [& I: f$ p  B/ A+ J
[let i 09 N/ b. R! u/ ~/ o$ f' G
let sum-money 0
2 @3 d9 Y3 }* E) Q! y: Lwhile[ i < people]9 h2 G- ?& K* c+ z: q  S6 U7 i
[
. ^1 L3 Z8 {3 y2 o4 Fif( length (item i
! E1 U, A3 ~& n' S. h* I2 V* F[trade-record-all] of customer) > 3 )

. g4 K& a( L1 j/ ]8 \/ L6 t) y, j[. H/ |0 e& \5 q* G& f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): f; F4 {9 \# s% v4 v  O
]
% {- h6 i2 P- G. P3 q]
6 e2 j, b* F- A0 _3 }* @( [let j 0
& s: G1 ]+ ]' i) I0 [/ ?8 plet note 0% w1 j4 x6 m. o
while[ j < people]
$ v) X, P% z* {2 L4 U9 m9 A- C[
  S0 ?: K( m2 _# U2 @, Zif( length (item i
1 @7 [  m7 r% w! E, ?9 t6 a: \4 L+ G[trade-record-all] of customer) > 3 )
* i" N" y. U% K; @
[
4 L7 W3 |3 \' u0 F: Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 C8 x7 H7 @! w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 |9 A5 L$ {: p: k' |+ \- \1 d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& |! e6 x- C  f( k2 @0 v
]
/ W0 B  c  z4 }' f9 K  G& a]
9 Q( ^2 a/ t' e' n0 |; y2 `/ t* d. Lset global-proportion note
# m, q, I" S% i]
. j9 G; y0 f1 P0 K9 j# Hend
3 p* t% c) E+ b$ a0 M. P, q* h- E2 |  l5 L# V0 G5 x1 V
to do-trade
5 f1 T0 @1 z! x: c;;
这个过程实际上是给双方作出评价的过程" C4 d4 Q$ r" D/ {+ C  o/ X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ s: ]8 N* @" L1 @% @8 k( f# P* ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, o4 f$ Z, c( F+ x' S- o. s
set trade-record-current lput(timer) trade-record-current' X! Z8 C0 z; w3 u* L- b
;;
评价时间
1 I. v& J  n+ K# n+ n" ~* k  zask myself [1 [0 a( a% r" g7 m& a+ ~! R4 k# p
update-local-reputation
. \6 q& p8 L7 f! |set trade-record-current lput([local-reputation] of myself) trade-record-current  b2 X; a9 a4 a1 j
]5 \( C; |  g0 x0 ?7 x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: I4 _3 q7 m" ?; @& o1 \* E
;;
将此次交易的记录加入到trade-record-one
8 ?- d3 v8 c( G8 s' G/ `: Y# Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" V& y8 V! l/ r( i; \0 Ilet note (item 2 trade-record-current ), @- M: J: Z% R+ j+ r
set trade-record-current
& @0 y% y& h; A0 j/ U" T1 ^6 _3 G! G& G(replace-item 2 trade-record-current (item 3 trade-record-current))

% h  I2 Y1 n8 L' b6 S, c0 g+ ~set trade-record-current
8 \( X8 s& H$ F" H+ @# h(replace-item 3 trade-record-current note)
: q) Z7 d( y8 E2 ], V+ N8 Z# b. u5 S# v& j

$ }) X$ e9 `4 Mask customer [( ^. I( v1 @* m) q/ Y. c
update-local-reputation
# Q4 T, y. ?& w/ \set trade-record-current
: C$ \" f! \- M- w; A( N0 l9 w(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ g; ]3 ?+ [  h7 z7 C
]) O2 N% z* W& ^: L4 x

0 y' H. j6 U8 H0 T4 H

2 T7 |! u; V- f2 u0 Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- F9 G7 j  ?& r2 ^1 R/ U0 R2 y

. Q; g, a1 o1 f7 q: H% F2 F# A9 }4 `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); D8 x5 I. {& q4 L  ?5 e6 O
;;
将此次交易的记录加入到customertrade-record-all
/ C, @& |4 z5 h& Aend! v4 ?6 V% Z  f0 x

, w9 k$ b% O8 J1 ]6 cto update-local-reputation
3 k$ D/ `+ m& ?" C9 u) Y1 W# j# P5 fset [trade-record-one-len] of myself length [trade-record-one] of myself
4 y/ F' ]( u( T. `
1 x; C& Q- C  n- T! a5 J8 q& n  w) m# d; J# J9 B& o
;;if [trade-record-one-len] of myself > 3

3 x$ Y8 a& r% G  K, o2 \update-neighbor-total
2 g" |: Z9 x6 {: J3 b! w" C5 v;;
更新邻居节点的数目,在此进行3 p' w# U* ]/ a: s+ l" h
let i 3
# S. S9 U9 w$ l# y3 M' dlet sum-time 0
! X9 F% ?2 a2 G$ l- m0 ?. swhile[i < [trade-record-one-len] of myself]
& X9 v$ ]' q  r1 L8 x$ J[2 ^: U* B2 B9 L2 |
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 O/ B7 d2 B1 e4 W: i) c! h7 R
set i
, C* ]: d6 a, a5 p3 e* v( i + 1)
. L7 I% j3 Z" o6 Z# F# d
]& v2 O9 {  v! T% p: }
let j 3
0 V' C% W+ [8 r2 Q7 Alet sum-money 0
! ^1 ~- p6 x" ]( z6 {while[j < [trade-record-one-len] of myself]
# P5 n" `+ L1 D) I3 a[: p1 Q1 `( p8 J$ ]4 w5 w( s/ y
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)4 [% t! f7 a6 G/ N) z
set j
$ |( z+ _  i7 c% t) l) I0 P; T* ]( j + 1)
8 O* {; @% R" l# G3 `
]
. Q* A6 z( Q. T3 B: r8 \+ vlet k 3
+ B" c1 Q5 E; L  blet power 0% W! F) c2 a$ F8 Z2 l5 W! J; ^
let local 0
# O) I; H- o# V6 \' Bwhile [k <[trade-record-one-len] of myself]( \) F0 P: T! E8 ~
[& p/ {2 W" }  Y$ m( t0 i
set 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) ! e- \! K+ c2 q& h  {8 C, K& E7 X
set k (k + 1)3 r) Q# {6 F4 f% t7 |
]
% K+ p: }- b2 k7 m3 hset [local-reputation] of myself (local)7 A. X7 |8 B" F1 S* W6 ~4 i) t: e8 i) Z
end
- C& Q* \6 n% Y1 q% f6 {4 V9 ^; g- U( C& m1 g
to update-neighbor-total
6 z  {( z# O$ t. K
# A! ?( e! m; r6 \( G( Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% P  M' B+ S; ]! T# t2 S4 k! m. \- V+ z: A( n
+ J& j4 P! g$ n( X4 N
end9 Z- i+ x; w/ n" t

' T- c  _. |$ {' k7 @' kto update-credibility-ijl ! X* t$ H* O  Q
2 B. O2 o' @/ s  J
;;
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。
& E. X3 ?2 J2 U; K2 `let l 0
7 U9 m. w6 V% }$ uwhile[ l < people ]
& R' u  R( a5 b- X;;
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; X+ ?+ V0 U- T9 T1 C# H
[7 N7 X: b5 w/ [0 ]: ~& R' ^% r" o. ?$ g
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  E0 i0 Q. r0 T3 ^+ C/ y# {0 ?if (trade-record-one-j-l-len > 3)8 t: R4 _) K6 [7 Q- |- y/ m3 \
[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$ \+ Y" T) E8 k0 \* B
let i 34 M4 O: q2 z* v
let sum-time 0
. o8 ~! Q& S$ L* m' l7 J1 jwhile[i < trade-record-one-len]" J5 L" T! E0 C" l' y; R0 A! t: S
[  c$ H' n8 Q& m5 B# F' {/ W8 h- G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 B& w6 k- E- t1 j" A( L2 g! Y- L8 I6 L2 Yset i8 ~3 V* a( e- R
( i + 1)

9 u4 e/ r- c. F4 n! o/ s% U  L]
5 K  ~7 k5 D7 O3 S; E8 [. Glet credibility-i-j-l 0' F. @9 W4 T( a+ N( q/ L
;;i
评价(jjl的评价)
5 ~/ L; c/ `) K8 Vlet j 3
. K) p) v' \8 ?/ C2 rlet k 4
5 p7 q! H; }* D1 j1 }while[j < trade-record-one-len]: F5 ?: D7 q- ?1 s$ l  r
[
3 {# B( `- w" e8 E% z% N( mwhile [((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/ I4 J3 e5 v1 L5 w$ P% U
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)
. a& g6 x0 n5 K( B  zset j* ?+ z$ J: B' h$ i( V6 E: R
( j + 1)

+ L" Q; E+ |1 z; r% g6 M# ^, F]
8 Y# n2 ]8 D' \) @( L, Rset [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 ))
! J% P1 s( c; a' N/ r. r9 V
) s5 C7 D  \! i) V- b

8 R+ h( C& V9 u! f3 Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). s' Y$ s3 R* e( H: k/ p1 Z
;;
及时更新il的评价质量的评价. C3 K' F  [3 K8 k+ r3 F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 d, |! c4 k) @
set l (l + 1)
6 Y/ S* f; {' J5 V' C0 T]2 k4 ~5 r. @0 [: N
end
: H* M$ J, h! k* r% P
: m( s9 ^# I! U" u. F, i* Oto update-credibility-list) H4 }( F) l$ d$ ^) q' O
let i 0  I) C' Y7 }" y% u3 M
while[i < people]+ k6 N* P/ g9 j" [5 _8 f8 y
[
& d* |4 ~, e* J# i. |let j 04 u* D' y$ F, x& F% N5 V1 g# X) K
let note 03 X. x2 w4 ]6 y
let k 0! [8 L- I4 m# i8 |' U2 `
;;
计作出过评价的邻居节点的数目
: m# f$ c* T( M7 ]3 Q* t' |while[j < people]
+ V7 ^; I- q$ |[
' |% b1 |( s+ Z" Aif (item j( [credibility] of turtle (i + 1)) != -1)1 x7 z; L! x* x! g
;;
判断是否给本turtle的评价质量做出过评价的节点7 l! `* C9 u$ {8 x  n/ ?
[set note (note + item j ([credibility]of turtle (i + 1)))5 p) |; f* M5 o* n* I
;;*(exp (-(people - 2)))/(people - 2))]
+ `3 x! v5 d3 ]
set k (k + 1)
8 E1 r2 C! K2 k( `8 r' f]
5 r, W4 T0 z8 ^+ \set j (j + 1)
; I- O' I$ p- I; Y]$ M4 K: z  w. C- z* b
set note (note *(exp (- (1 / k)))/ k)
- A6 a( m5 x: @3 L1 r: o* Uset credibility-list (replace-item i credibility-list note)
) m: E( x+ ^$ F7 pset i (i + 1)
1 v7 ?7 L9 n$ s8 P/ y; l5 d# J& b]$ ^* \  ~2 c& ~  `( `
end1 A) F$ n+ d2 r4 {
3 }  u4 A: m2 n+ y4 J( ~7 S
to update-global-reputation-list
/ r  @7 o) ^$ U0 rlet j 0$ B; J% F% W. Y, m; ]
while[j < people]$ \3 R. J8 ~7 `3 x
[' u  x; n7 ^+ j* k8 t* P$ _8 J
let new 07 E; N4 K& T3 P7 [( f
;;
暂存新的一个全局声誉
, A2 j$ V" r& x- [$ k8 Elet i 0& \& P* V" w# Y1 [
let sum-money 07 z8 D' D! V: d' H9 @9 U) B
let credibility-money 0
% o9 _+ V* [) X7 A+ x, Xwhile [i < people]
: X2 M, f; @$ L[7 Q, H+ Y8 m- w* A9 o' L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: U* O' ^3 V2 gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! s% c* J& C1 R# _2 B
set i (i + 1)6 a0 j, d; d9 X& i
]
! X- n7 T; ?+ ~  T  e8 [$ Qlet k 0
$ v+ T  K5 X' O6 h% A$ {( P: vlet new1 0
4 t6 g) l7 J) J. \  K, b- Swhile [k < people]. z: D) h: [$ }# b% [. Q
[
: v, ?. _: {9 _& ]+ o8 Lset 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)
2 F7 T. w- K% B- f3 m$ N+ Q$ sset k (k + 1)2 v6 Y& ^" F, g5 U
]9 v) V7 {& r5 K, e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' ?$ s* ?' i4 {: q* b1 a% x; @set global-reputation-list (replace-item j global-reputation-list new)7 F8 q! s3 @  @! Y& z. \
set j (j + 1)- ?9 F' D' ~: C2 p! w3 ?
]
/ \$ w, ^6 |7 a7 }2 Tend
7 E. ^" P1 E; R3 F4 D7 J" \. s+ W3 p% S5 T) {" a

1 g& H/ S) W% ?" l3 U& Y# ]8 ^9 D
to get-color6 O/ |' s# V2 C/ u3 Z0 b

0 n+ d: I# J; kset color blue
. c# G9 u, _1 f3 y/ C2 O
end
" ?8 Q! `# I8 w- W) [* k0 X) [, [  q
  m" s& E0 n* f. ]% M  z- |! i- Qto poll-class7 V( S# F% W; `  F2 v* j
end
7 g" a6 K+ y/ w4 }7 g  v" d6 T. O5 u% z6 m3 g1 Q7 f
to setup-plot1
/ K: ?) ^9 o& O
; p" n- x- W% J( N0 a4 Jset-current-plot "Trends-of-Local-reputation"

6 D% Z( n4 L/ B- O' K0 l2 f, Y
. C+ Z& y6 m" \- [% W1 ]; t/ ]set-plot-x-range 0 xmax

/ @  Y+ G& K3 d2 k
+ ]: F# U1 S: |0 M- lset-plot-y-range 0.0 ymax

9 L) e( K  e! }1 C" oend+ C+ X, ~& Z, h" @$ g$ z

0 u3 S8 v( T: F0 ^% A" Cto setup-plot2
' Q! z3 l- S5 b) m8 ^: O  E( V4 }, X
set-current-plot "Trends-of-global-reputation"
& d, L+ }/ [. e' T. o( l

% }4 H- m5 l- N! v3 {. Zset-plot-x-range 0 xmax
* ^9 ~! G  h" P

! E  |. G2 S  |set-plot-y-range 0.0 ymax
- L  P  H+ b% W- o1 V& P
end
4 m) E/ |1 h/ s) u3 r0 @8 p- P
- w/ x9 r" S" h- bto setup-plot39 K5 r3 }: H1 `; Z$ O5 H) m

$ Z" {+ Z( c$ f7 T7 Bset-current-plot "Trends-of-credibility"

. H+ _2 z$ _9 \0 u4 u6 j7 z" d) j
# A# ?; T8 H; |! m4 Uset-plot-x-range 0 xmax

; O3 D7 M2 l) l( A2 f9 c# |8 }, n' _! L7 G$ d  P0 B* ~' C" F
set-plot-y-range 0.0 ymax

" T% z3 T3 {0 o$ ^; @; I; ^end
  _1 V- }- J; w$ u8 m6 f4 k, n6 F) C8 |1 K! n% d; x# k
to do-plots' c+ T1 f% O! [, n0 J3 x
set-current-plot "Trends-of-Local-reputation"
) U  j  i2 @- ?+ a5 |) \3 [+ Iset-current-plot-pen "Honest service"6 A* d! l! T7 S' j! O+ N  c
end) d% e; w* O" J6 @8 H4 d

1 g. P3 E& f. u- X6 j2 {[ 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./ i; l8 M" E4 R0 g3 z" x6 C, r. N

8 v7 ]! I7 u6 e$ |( Q. B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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