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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:
) Z: H: X5 y9 E2 Ito do-business / z: \( _, E5 |2 ?8 X
rt random 360
& Q" ~0 ]4 D* n- L% y2 m: q5 f fd 1
+ d, j. r) J& L, p1 T3 n; }# Z0 l ifelse(other turtles-here != nobody)[& v$ B6 K2 \# ?% 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.
: ]9 ]4 x: s9 a% y$ E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " R3 s* H( e9 S
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" Z$ _) k3 y! l- ^$ `   set [trade-record-one-len] of self length [trade-record-one] of self  Q' ?+ s6 A# R& @4 D5 O
   set trade-record-current( list (timer) (random money-upper-limit))
  A7 H! z4 i) P! C- |; {
$ ?3 F: j$ T, f! C$ d问题的提示如下:" Z% _7 e5 x* c1 L5 @( M

  ?9 N% b+ e$ h4 y$ y0 eerror while turtle 50 running OF in procedure DO-BUSINESS% L- G! Y2 {$ {
  called by procedure GO
! ?$ G& J0 W( I2 ]4 a- G; Y( ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 R6 F4 j7 I# C2 v3 H: S
(halted running of go)
/ d" O, y6 I$ b: F' [# Y; U6 Z) t
( K& m& S4 D' u& F: u  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~~
: `/ G: D% F( C: k  b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1 D% s3 [3 f- z# ^2 `+ R8 ^
globals[# M! p  F# N; ]! h8 m3 W+ p
xmax) }$ x9 r, c& S7 Z
ymax" r4 [/ ^; O- w' A9 l7 S' f
global-reputation-list
0 _' f. b( j5 j9 @$ D+ _& X0 {) `( M+ m
;;
每一个turtle的全局声誉都存在此LIST
" I2 ^# A: ]3 J# u9 X; @credibility-list! f+ U6 l! S* z' L8 m& Y
;;
每一个turtle的评价可信度
( Z$ o7 W& j+ I( T1 phonest-service, N% e: m5 S3 @# Y: F3 `. Z6 F$ L8 ?
unhonest-service
  b% x" k" u' t7 G+ @5 ?( S4 Y" Ooscillation5 t0 n" b0 r" v7 X$ s! U, V
rand-dynamic( Z. _+ i2 Y! \$ I) l
]+ b0 P4 G( u# N5 l2 p4 J  x( V

( X) \2 ]" \" _) C0 xturtles-own[
. U' j6 p" `* Ptrade-record-all
' \/ k' D# f2 q+ L# D- p/ b% D;;a list of lists,
trade-record-one组成8 C8 _! `: D2 ~$ o8 R
trade-record-one8 p7 T$ v, x# u& D9 u" n& c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 o7 Q$ I" R1 `6 y) S; L3 V
3 L& l# G+ o, @& v/ ~5 ?& U5 r
;;[
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]]
/ p% B: k9 G& y# ~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]
0 j: r4 T$ i$ W4 M. Jcredibility-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list4 z. L  v; D. m2 O+ V! \
neighbor-total* X7 ?' L5 }7 ?( Z1 U* J3 E& r
;;
记录该turtle的邻居节点的数目+ p9 r/ R6 r: ^
trade-time
( j* A& X+ N  |' s# j/ I;;
当前发生交易的turtle的交易时间" y# H$ ]4 v9 L5 ~7 D
appraise-give4 J8 J9 ]% A  y4 ?+ m* t
;;
当前发生交易时给出的评价
' n$ Q/ B# c9 Z2 m5 S1 `appraise-receive' k. c- K1 ^3 a' B7 ?9 A5 x
;;
当前发生交易时收到的评价
6 K$ C  f. b7 Sappraise-time1 L1 E7 }3 r& {; R/ K9 I, Y% o
;;
当前发生交易时的评价时间
( j8 ~+ D" c" \/ i/ ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; n# n4 Y$ d# i& c
trade-times-total
; q' f' l9 W/ k  U;;
与当前turtle的交易总次数
6 d; _' y, o8 _$ atrade-money-total
" K. X$ p  O, ^# @' t- b5 E3 Q;;
与当前turtle的交易总金额/ q' s' |5 p8 [; q
local-reputation+ M2 p* {- \9 ?
global-reputation
$ p; I- S& ], L3 Tcredibility3 A, o9 G% g4 B( M! d5 l
;;
评价可信度,每次交易后都需要更新: A5 @  b7 y; b6 o6 V6 s5 P
credibility-all/ p' o. b3 a4 o  {
;;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
) N0 [4 c7 g3 f- h7 k; F
- X. m: Y# O: d: b;;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) ]! c+ x; r7 V/ n8 w8 K) h
credibility-one" Y7 B$ X( R& B5 @- x( _3 H4 N/ Y
;;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/ g; ?5 H  S3 O
global-proportion
4 I9 F+ [6 d4 b- w: W  M6 icustomer
! D- Q/ q* t2 b2 T- }customer-no
  N' A" A% a' V3 A' ]1 gtrust-ok. f* |$ X  f; k- K! Z
trade-record-one-len;;trade-record-one的长度
& N! r4 [$ a% [6 C9 @: S, c]
6 s5 l, J4 L3 ~1 ~) R6 t# z; l. z5 Y' H9 }5 Q
;;setup procedure8 A" L* d' ^* G8 ^& {# @

, u7 M. S" f. v/ cto setup  J9 v. `( n  i. L, B6 H
- w0 J3 c( J: ~( O
ca
6 i0 \! U5 i7 D8 F* Y. R" x$ A

% P; v9 B* a8 }! O' v; p5 k# ninitialize-settings

7 ]6 U, ]0 B' P% i2 |4 |9 r
9 W" n' l* v3 W' \crt people [setup-turtles]
, d7 \6 }" `, j5 ^- W* ^* W+ V

- Z5 o' V7 Y8 J3 Y8 \reset-timer

" j  k- u. R+ r8 y% b. n1 K" ]& q2 |
/ O' |  ?& W* F, gpoll-class
) @/ p" D3 `' q

- _  Z0 {3 t% E/ ]6 v0 A  Ssetup-plots

1 d" v& j) Q1 F. f# C% L, r0 t  u; _1 [0 k* G* _
do-plots
/ L/ q4 o7 H4 y: {: I
end  E$ k1 [, a' J* ~
- U# W& J8 M6 U( L
to initialize-settings& ]4 p* N7 a1 m0 u5 b1 O: n

0 B$ \$ |  \' L7 Iset global-reputation-list []
1 l8 F$ \6 X+ O2 G2 }

- U: v: D# T+ x, F4 m7 n/ P7 bset credibility-list n-values people [0.5]
$ w3 R! j! ^" k: Z

- T7 R8 S$ O, N' ^3 l' n, v: `. w* }set honest-service 0

) W# c; S4 |9 `* \, J3 C& \! _1 z! b
set unhonest-service 0

/ O9 W- }& s- i& U$ N
, P! c. Q' p; F( t3 Sset oscillation 0

1 J9 ^: o& |2 k/ }5 g- r8 t! u. I; S+ W. z8 _9 U# m& O/ h
set rand-dynamic 0
2 r# f- b5 r' @' _+ A0 q+ m
end
3 N% x# {: r# {% R: \7 t" q2 Y0 o1 b0 n7 U! z* K9 Y
to setup-turtles : |: H2 H: ?( l; \- G2 m. N
set shape "person"( W, _9 Z: c4 ?5 d
setxy random-xcor random-ycor8 w+ I- f2 C: \  i( Y7 D' s
set trade-record-one []
; ?5 Q% E+ J: K5 \3 S. m6 D

  S+ J8 n* y" {' {; @7 Qset trade-record-all n-values people [(list (? + 1) 0 0)] 6 s, I) w; G0 b1 M, ?
- ~  {1 f, X1 i8 g" w8 V
set trade-record-current []6 b. ~" {/ L. I* q$ U; M' {
set credibility-receive []7 ^6 E' k6 r( n, [& k! p
set local-reputation 0.5
& G# a, @0 J7 |  @, S0 {2 wset neighbor-total 0# l- s5 q! v% Z9 i
set trade-times-total 0
" [# |5 p$ Q1 y* L/ E- gset trade-money-total 0* u) d* K' f0 P8 z* \4 L
set customer nobody
  v4 l: X; Y- t" R7 Fset credibility-all n-values people [creat-credibility]. U; _/ H! j0 x  O7 B1 T- i$ a2 P
set credibility n-values people [-1]
# Z8 D! u4 K) @* S2 Q1 yget-color
0 y: C5 s" n5 H0 M
* `3 g" y* J# `# K$ ]* a
end% \) h* _% }( M) Q* E3 {

* _+ m( P4 @  u: u$ s9 n: T$ X+ Sto-report creat-credibility0 j; |5 _2 y* U' k' C
report n-values people [0.5]
: _0 [) ~* r6 E$ Y- H7 vend
" e' _* L* S6 _- A" k! A8 p; j$ Y& k6 w2 p6 `0 b
to setup-plots) R7 l3 a' \6 _0 ?4 D" q+ m
/ L* @' I! t" n  E# W/ r
set xmax 30
: d" c5 Y/ v, T* v

2 F  E5 D+ F5 D7 Zset ymax 1.0

4 n  k3 Y$ ?- `1 {1 b- @4 N0 m) @$ U4 ]/ ?. [( M" C7 x* u8 T
clear-all-plots

0 I0 x$ }  Z& b
/ T0 q/ ~7 L# o$ U) Bsetup-plot1
7 ^; p+ y3 e8 C# U8 ]

) ^0 r+ L$ I/ D) Osetup-plot2
# f' g7 A4 j+ c5 u' ^
6 ?1 L4 S* m2 b& R; |
setup-plot3
. i% \; m! V: Y: R7 \/ @
end: L) ]2 z9 y  a

9 {3 o' q  r; R# E; G: W8 g; N* R;;run time procedures  L9 Q" E8 R! r+ t4 r/ ?, c; E

6 E! m4 K) P4 c, V, Z. Bto go
/ E5 F6 V# V. Y/ N. \, t9 Z; O% T/ D+ y* R8 S) D& i2 T" |
ask turtles [do-business]

( {4 j7 B# V* y* k1 P4 H& Cend5 B- E) L4 f4 j0 ~

& r9 j% ?1 L" [3 ~6 }9 [to do-business
4 g) S5 ]& Z3 E& Z4 {

- Z9 v0 F: M9 z: T
1 [8 v8 Z# d1 k. Z1 v9 qrt random 360

- k8 r8 \" \- @7 ]% P- {5 @: H; R  v4 y3 a
fd 1

! w* B* f/ y# J; i' b
5 P6 f3 v: j" E( `  f$ C! y  Wifelse(other turtles-here != nobody)[

+ J# d* C( G  z: Q, F$ d
- U; h! o* [. M9 zset customer one-of other turtles-here

9 C9 e, g. ^, v, _9 |8 j3 P/ R1 q
1 |$ O) a) _; ]% t1 B;; set [customer] of customer myself
: U2 |( v: C6 ^2 p# T' J- n1 e$ d! \
' R. f; _/ f8 L1 B9 M0 i, a$ b
set [trade-record-one] of self item (([who] of customer) - 1)
2 {: y* V: v7 F+ }3 ^[trade-record-all]of self; @3 j4 I4 w$ C7 v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 q5 s6 G# n& t' S$ U) j0 {  Z, `- t  Q6 g8 E+ Z* d
set [trade-record-one] of customer item (([who] of self) - 1)' n0 Q  X+ \, `8 A! M9 m; g, q( I
[trade-record-all]of customer
7 B& `9 s" i* ^  a5 j7 M/ _
! b  ^. a  V& `: G; d* x
set [trade-record-one-len] of self length [trade-record-one] of self
! ^/ D1 ?( f) X! ]- I
9 Q$ B1 l$ v& i; ~. }2 _
set trade-record-current( list (timer) (random money-upper-limit))

+ u! C& L- Y" Q0 B7 [" @- [$ S% I  N4 H
ask self [do-trust]5 r  a# X* Q; {+ `5 b+ r+ \0 b
;;
先求ij的信任度
! F2 c  W0 _9 P0 B& V6 k; u/ Z# Y' w& d6 T# A0 o
if ([trust-ok] of self)
+ p/ W0 ?  Y4 z+ X! f. S' U, s) r& ^;;
根据ij的信任度来决定是否与j进行交易[
" V* x1 j& X2 g* h6 T% l5 f6 X0 z- x: Dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 ]' `1 t3 C: B  E( l6 f/ H
+ t$ P3 ]. \. Q3 K; t( @[
+ r0 o; M6 P' h8 q& N6 Y. N0 p
7 k! \0 A6 |: P5 {/ P0 U1 Q8 a. ~
do-trade
+ u9 W+ ^) z9 [2 j
$ V& r9 q8 B/ z  d2 \
update-credibility-ijl

9 ^' [2 d; D9 ?
+ `/ [0 q* y: T+ r% ]update-credibility-list" A" k8 r" F4 r

# k* P+ z4 M+ b3 B4 E3 {  p+ z* g. F# d" s
update-global-reputation-list

& ?2 l! N! e% R; f* g9 Y
  q% c$ `6 r3 B1 ypoll-class

0 O5 L& a; K. }6 ]9 S" q- {/ L! [8 j: p: [  X+ w" m1 x
get-color
. e( A9 x% a( f* I/ @0 M
3 X2 R( ~5 _6 o9 r: y0 T% |& ~
]]
4 q8 O6 j( W9 [3 q. m9 R
+ \# d3 O9 s( J+ H  d) r;;
如果所得的信任度满足条件,则进行交易
- i: @. R+ c$ O5 \* K6 T; j0 h# A' x/ }. S7 k9 {9 u, u) [7 T  c: w. J
[

( p% d+ R" m' z% _0 Y5 p; X8 F8 R6 R! R9 B% ]4 u  a
rt random 360
9 e' Z' B3 f. m& P/ i1 Y# e
9 w: d3 B$ A! X
fd 1
6 X8 I$ P6 j( D  G

  ~$ X2 a* X! v- d]

& Q% q0 F! h4 C6 z' N- q, Y* C1 f% |. f3 X3 ?  m+ v2 i
end
! S# O. q; |+ B' b# A$ J

* U' S" l, \0 ato do-trust 4 y  Q- b: g; \: j% W. j4 l9 }1 \
set trust-ok False
& z, V3 C9 b, T% e
/ B+ H: x7 ]9 Z! L& b1 S; U8 U
- A6 |7 Z5 m& O& T7 k
let max-trade-times 0
4 T4 n; h/ i5 u0 |4 R" rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 M. t+ D, {5 Ilet max-trade-money 0
3 J$ d8 s  v3 rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# R  B9 K' m5 b! H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  K9 u& J, m( W4 Q( A5 u. d+ h( m" v/ D, ]- B; j  L2 a( a9 [
- g! Q$ u/ Y( ~! |" S6 I
get-global-proportion! P& a% B3 n* C5 L
let trust-value
6 y* N0 |9 u- V3 `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)

) z  P  M0 i: M' ?3 x% s& Q, pif(trust-value > trade-trust-value)
' B% {& B9 a0 n8 ][set trust-ok true]
) E$ E* {4 V: Q. M$ }8 \9 o& iend, ~; c) |" W- }( P8 ~  _. U
: [, F' i) r) t6 ]8 i5 U: M8 s
to get-global-proportion
; X7 c! n0 Z4 vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 C; o" i8 @$ r& L2 @" c  u0 j
[set global-proportion 0]1 k% x/ I; j* t
[let i 0
! E0 Q0 b0 k5 u+ @$ blet sum-money 0. U; I0 ^' v  U0 s$ x7 _
while[ i < people]
! m5 h9 r# e& b  Q# p, J[* O" Z* Z9 |3 T) ~8 C- b
if( length (item i
9 l. m0 m2 x" O( Y$ ^& F[trade-record-all] of customer) > 3 )
5 }% K9 w) Z1 Y0 I' o/ B8 O7 B
[
4 z0 N: O4 s" N4 P) Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 q. F/ Z8 @: k- D5 y. M/ S, G
]6 q5 _- q) d& p3 |
]
+ f' M( N/ u: c2 N: s+ }" Ilet j 0
3 O4 Q/ A6 `/ g  Ylet note 0' t; u6 H' |# f' w& `" _
while[ j < people]
1 m. m1 _7 B5 w; Q" f[
  H& [. [) d( nif( length (item i& j# k5 @" e8 T5 c
[trade-record-all] of customer) > 3 )
. E! a- A+ J. S) J  ?; d& P
[6 A7 A( X$ a2 ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- M6 _+ M3 j5 H% @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 a) G: ]+ V: k, f  Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 {' Y1 _& R4 _9 i2 l
]& A1 T1 n  _7 ]- f$ F
]1 }% [7 `8 o: O8 M6 X/ ?. i
set global-proportion note' z3 s9 }* j7 x  C# E
]
$ `6 \2 P" }8 w$ Hend; T; ?/ [2 W4 N1 q& g' J

( x  F4 _: g; l! r( b( ito do-trade
3 n. N! a! i) n2 X6 W5 r$ t6 _;;
这个过程实际上是给双方作出评价的过程
9 s% f9 U' [; D8 Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 l0 [- ]  f% a% \) q2 O  B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, g: B( U  b& xset trade-record-current lput(timer) trade-record-current
# A6 y7 t1 D7 e, N) C) n7 O;;
评价时间  V+ v! o) }% {$ V/ X
ask myself [
( s, y: m' i9 o$ j* Bupdate-local-reputation
5 _1 t- _. ~7 nset trade-record-current lput([local-reputation] of myself) trade-record-current
6 E) n" a9 n3 l  v9 V]+ ]0 V% J8 o! J5 u( B9 _' _% _  |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 ~( K7 }7 |, \; S- p
;;
将此次交易的记录加入到trade-record-one
2 }  ?; p0 v; Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% F' }9 d: A/ {0 Q& h+ ]9 x1 g
let note (item 2 trade-record-current )( ?, t  B& y8 _; v& f
set trade-record-current
& A% S, \5 J9 P' N, X8 ]% M(replace-item 2 trade-record-current (item 3 trade-record-current))

" f( K6 ?* o" a2 eset trade-record-current
1 V! r. _3 m1 e' c7 f- d# `$ D( x- C(replace-item 3 trade-record-current note)
( E0 Y0 e9 ?* q  z) _, F: o& Y) q" q5 `0 z: x4 d
& n+ D" O- \: g# E! Y3 e8 `2 a
ask customer [
0 F7 X! O4 q; @% c7 k/ G2 kupdate-local-reputation
/ S9 b# V% [" {  }! n3 Gset trade-record-current5 G! [' N+ \* _8 M, P% K7 z* B  l
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) Y8 Q) E6 `' v4 p/ a]" r# ]2 T' V: R) D5 r
2 f# Y$ s5 V$ d2 p& S
0 w7 G7 @0 ~6 U: o! G, p0 w% ^: C
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' U& y% V6 X% c

" Q1 V' U  v5 g; Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% \4 T8 }: f; a( e  k5 d* \;;
将此次交易的记录加入到customertrade-record-all3 |8 o* B: k7 c2 a$ }5 b
end
  u  G+ ]4 \* u, y  z" O( M( R- h* n2 t: [- V; `+ f- q7 r
to update-local-reputation
" `; X4 n/ @3 @3 F# K3 Z6 Sset [trade-record-one-len] of myself length [trade-record-one] of myself( G4 O7 i. m6 @, b

9 @0 _" O1 L2 L; H; F4 I( A( A$ e: N% m
;;if [trade-record-one-len] of myself > 3
6 A$ k# B% U: `* N+ c! c
update-neighbor-total( N5 f) z! n5 N& t
;;
更新邻居节点的数目,在此进行
1 h% V, Y4 e3 P+ F) t5 @0 S, m* W0 Jlet i 3% k& L) v0 `* {3 v
let sum-time 0* K& T: e3 _3 r5 h- v
while[i < [trade-record-one-len] of myself]  {7 i1 C: Z+ {8 u( ~
[
! L& ?9 {9 ?. k2 ^! R) Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 O$ @3 S: q$ c: y* _, Kset i
; g2 ~9 D' K/ Y7 p# q4 @( i + 1)

( B1 t3 i$ R# X* P/ r0 n]6 \0 y) a- G% S) b0 h) D
let j 3
$ Q; V/ q: V& Y3 x) ~4 Tlet sum-money 05 U* P% }% t0 m4 _
while[j < [trade-record-one-len] of myself]* c* t' g1 F* n5 z
[
/ f, r/ t1 j8 Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ v) e8 A- w# @4 f6 T3 pset j3 ^8 d, H% Q; R/ V' [
( j + 1)

/ u/ g+ _5 h9 U$ k]
' Z1 ~) ^) D  zlet k 3) V; d8 j# v  f/ Q3 \
let power 0
0 I% B: r) W% v, Dlet local 0" f% q% m! ~8 @1 R+ K, B, t
while [k <[trade-record-one-len] of myself]6 T/ z6 c. b5 H. e  l4 n7 _
[
3 H0 G' J4 P0 l9 l; L! i  yset 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% m' A2 p. n! P, Dset k (k + 1)
% a( z6 g/ k2 P4 o]
1 n- \' R: B1 x2 G3 k- \& C' L5 kset [local-reputation] of myself (local)
+ ~: h6 J4 v. c) Y. K& r! cend3 }$ p9 `1 V; d( i! \/ k1 v

3 f0 X) B2 [% D0 |/ K/ pto update-neighbor-total. {3 k. l1 C- a8 I: X2 P. ]: q% p
1 o4 D+ o$ P, \/ N8 x5 P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& r; B  W# q; L3 |/ |
0 G/ @! M) N# X1 L4 \5 N% }( G! ~
; w% U  e2 \) O7 Q
end* a: ^5 ~* t8 r$ Q* T
! V0 U3 s7 p7 D! l% V# @& E
to update-credibility-ijl $ L# P: @* z- Y. |% X$ S
- |& O& J, v5 F8 D/ Q& S7 P
;;
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。
. C3 @( U: w: V1 O6 i6 llet l 0
) Z4 b' |+ v9 }# S$ r! k; @& Rwhile[ l < people ]0 r/ h9 E3 V9 U0 G# w
;;
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! L- j! V( {+ S) U, F# x/ h3 _
[/ `5 `9 q! R1 p9 f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' E! V% m$ W' I) r' t
if (trade-record-one-j-l-len > 3)
  N0 u* u( V; x2 T4 N0 w9 v, A3 E[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
& P( c8 A' v5 U5 N2 c# _let i 3
- b4 [& ^9 r% F7 g. ~let sum-time 03 q4 n7 b2 i& V7 q# `  r8 _
while[i < trade-record-one-len]0 Z( _% \9 }! B- U7 m& t- i
[
: i: J* ~( [9 O4 ~/ k- y% T- n  Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! C6 m* f" g; x6 k& u: T7 p
set i8 i. B# z! G, n, m% M8 e  F8 B/ {
( i + 1)
) G+ G  a5 y5 v4 f" u$ j% ^
]( {* Y; H  C; |/ A/ T
let credibility-i-j-l 0* d) G! G$ i- W/ j
;;i
评价(jjl的评价)
1 t7 A. q# ]' p8 l& s4 w$ ^let j 3
" T/ l" J  h1 Ilet k 4
6 A8 L8 a: l  Mwhile[j < trade-record-one-len]
- O; v. J5 T; A) @# G+ H[: G; ~( H2 E! U
while [((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- P/ D$ X9 H: E" g
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)8 r) N3 n$ j- e( Q
set j7 w5 u# [8 A$ i% t6 M) f$ B
( j + 1)
3 M  c; a7 u1 Q* v1 E3 a* v
]& a/ ?8 W6 P+ o2 M$ ^8 v
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 ))
  s" U$ y8 {# B0 d
/ `) t. e8 N7 G. ]

1 F: Z. m' m) qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 [* z5 r2 G+ `8 {4 @! A
;;
及时更新il的评价质量的评价7 ?: N. N/ |! u: J: [. |3 l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# g( ^9 `2 Q' i2 b1 ~+ v6 Fset l (l + 1)
. u% K1 r  i3 L]
7 `2 W/ R" G/ I- W- s5 J. {( B7 Vend
* T. q! Z0 g, J/ t- `! l! o! T4 ^0 {" a4 D/ ]
to update-credibility-list  T/ m, [0 o! G0 V& E+ Y
let i 0
4 z0 k+ W  C' gwhile[i < people]* `, |3 y2 ?0 t) j
[6 t3 c# P7 B. k6 q
let j 0+ P! l. n; ~( a/ s, @8 H
let note 0: i( A1 U8 t0 L; d
let k 0
, m5 t5 r4 _  ~$ A" Y; ^8 ~;;
计作出过评价的邻居节点的数目, L" C. M6 m1 I1 Y" ~$ f
while[j < people]; O: s% C+ c+ A+ x  ?
[% D$ E  f# B1 d8 ~! Y7 i' U) i& H
if (item j( [credibility] of turtle (i + 1)) != -1)" x. J4 }3 R' S& ~5 Z! F# `
;;
判断是否给本turtle的评价质量做出过评价的节点
% Z0 s9 |! U  d6 j  g* i5 p[set note (note + item j ([credibility]of turtle (i + 1))). F1 X" I1 p# z( [
;;*(exp (-(people - 2)))/(people - 2))]
3 I+ z: {# h( _) F+ c$ K/ A# @# I0 h
set k (k + 1)
/ B2 B& v! T$ M  K]! R: S- R" @& i  q8 l4 B2 [
set j (j + 1)3 V& Y/ S" j) _% n. v% X
]" t! C9 H1 i, s8 J. [6 ]6 q
set note (note *(exp (- (1 / k)))/ k)
' P( T# u. S3 g. Lset credibility-list (replace-item i credibility-list note)5 h+ _, G/ I3 F* L3 {# M
set i (i + 1)
  C: l' N" b8 X# C* d- p, s]! u; x0 `" d9 k9 I- Q/ f: J6 P
end2 N: j- _5 V; L1 y$ P. v( T' M

6 s7 N3 t% @& [2 o& `to update-global-reputation-list' @% Q3 x" M3 U: D
let j 07 x# l* X" w( [  \: ?9 m; z& i
while[j < people]
! }6 {0 g) R' F: B+ R5 f[( Q# I! M' N8 k/ t
let new 0) R$ Y* A! l2 v7 Y7 c% |
;;
暂存新的一个全局声誉* i9 c+ H3 q7 p( W% }* h3 j
let i 0
+ O  g1 c  g6 R) M8 N% v+ q; Jlet sum-money 0
; M5 a. W0 Z# _$ L. alet credibility-money 0: x  y$ p; ~( F1 d% ~6 p
while [i < people]0 d3 H# |: N: H: `
[$ A! K* F7 O" y7 P" M* q" m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' u0 c: ^; Z  X, T4 l% w0 c0 Qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 f2 R' J3 |/ f& i9 E1 z# `  Dset i (i + 1)
/ d/ j( f/ X$ \2 D* g; y2 ]]6 i9 S3 H4 W/ @# m
let k 0
6 I: j' a5 f4 B) P+ M$ slet new1 06 s1 Q" Z4 h0 q* ], r+ ~
while [k < people]
! a. y2 q  `0 S/ d4 a# D- ]3 h+ a[( y7 }' W' |  T5 A( }6 S# X
set 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)
  P6 J  y, A* ], L( L1 cset k (k + 1)4 `' a, {: a- B! F9 H2 J3 I- R
]9 e  n6 `% h) B) u3 ?
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) i6 n6 m# x; Y0 W, b7 lset global-reputation-list (replace-item j global-reputation-list new)
* ^% ?0 A3 V4 v+ T; f6 ~set j (j + 1)9 S; T! m$ C( Q
]3 o; y- F; H) n% N' m5 }
end! q/ {/ |5 j0 Q* b! i
4 x( @2 C0 W9 p" C. [2 F3 l8 ]

0 F6 `7 e" X( g3 s% e7 z$ F6 z! l
to get-color0 a- m! j: N: g3 n- j3 F4 S0 g/ M

% `' G' a- [3 P: O. Z& Yset color blue
$ _3 T# C; e; f
end- ?9 H2 f* c( x* [: ?6 l

, e. P) X' ^1 ^/ r8 x# Tto poll-class
! ~( v: R. o+ A9 [end$ _6 o8 E/ ]2 T7 T3 m6 _0 G

( K/ @3 R. D; I$ i/ B& d. k' lto setup-plot1
* x7 j. n. O  [% s! Z
) G! h6 ~" Q+ ?set-current-plot "Trends-of-Local-reputation"
* s' v4 h3 q1 u8 i; U2 B1 `

9 {( J1 s* ^3 H8 Iset-plot-x-range 0 xmax

4 [" f" \* L9 i" k6 b9 w+ E4 q/ K& m$ j
set-plot-y-range 0.0 ymax

0 x0 _! p  \: m: {" D+ n2 `end
( I3 a, J5 ^$ ^5 P) C5 R$ \, d2 n: h7 O9 P
to setup-plot2! Q+ A5 q* ^- @0 g2 K0 V1 B

) ?% x2 |2 K& ]; S' Gset-current-plot "Trends-of-global-reputation"
) [- b2 Z( a9 x4 _* k

+ U$ l/ _2 r- K) |; O* k/ Cset-plot-x-range 0 xmax
, D" {( B& g2 f6 g, K
- c9 ]! P- ~* w/ y( D* z6 J: u
set-plot-y-range 0.0 ymax
1 W; ^2 b9 ~1 x$ H  X. F* N
end
7 `. {; m0 v% B- r  W' y7 a5 R$ \& b- o# H2 I
to setup-plot3  m/ ?. ?6 I- l3 v4 ?+ L" ~( ^4 ^
7 }3 d# W( ?. i8 H$ p+ w
set-current-plot "Trends-of-credibility"
4 R* _$ [" D, G& ]( \* v
, g6 h7 g9 z# a- ~- W5 ?
set-plot-x-range 0 xmax
( ]4 u5 n5 O, K3 F4 \( y  o
$ L& e2 F: f' c! d9 p2 ~9 Z
set-plot-y-range 0.0 ymax

4 n: b7 ~2 V9 T/ pend7 ]' Y3 D# x# M/ J4 b/ _+ |
3 {/ W8 l1 z& [/ R7 f
to do-plots
2 h1 a3 S4 ~4 d3 G. {6 V6 }3 x$ Vset-current-plot "Trends-of-Local-reputation") @; D  ?- T* t% V3 C
set-current-plot-pen "Honest service"* X; W* s) {9 R, S3 \7 q8 x$ X7 I
end( N1 O3 O) v% U$ ^0 P

) k+ z& K5 p6 l8 _& X# `) ], T[ 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.
2 Q- y/ ?. L! g3 l
- @# c9 \  N8 T  s/ r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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