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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:
; o& R4 i+ }- Y8 @9 }7 ?& Z9 Rto do-business 5 L/ U/ Q  ?$ E( ~
rt random 360
9 p5 |3 P# R+ ]9 ~2 m% M- _ fd 1* v: q% Y$ @1 E. W- S! S
ifelse(other turtles-here != nobody)[& \( B/ A, v) h# v& |
   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.
  {. i6 H( h7 {' j2 Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 A0 d6 T) }' s5 L$ N3 e! }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  H1 J" [  Q3 r4 _+ E   set [trade-record-one-len] of self length [trade-record-one] of self
7 l9 x6 i. X% F# b   set trade-record-current( list (timer) (random money-upper-limit))3 y/ d5 R+ q4 J4 M. ?, c
" Q. h3 d0 T5 K! i$ Z# a/ d! @7 N
问题的提示如下:
4 B0 E: s( A) p: V: e. Q8 V3 c( ^8 q6 g7 X- {* z- A5 j+ h; Z
error while turtle 50 running OF in procedure DO-BUSINESS' a3 {( }  _0 N; y4 H4 C, s1 ~, P
  called by procedure GO
  T' z5 d) p1 N$ H, ?& MOF expected input to be a turtle agentset or turtle but got NOBODY instead., W0 h, Z2 I* c8 q9 }
(halted running of go)3 H& |" M) L0 Q* L
  y. b) k: a7 i: W% {7 F* Y  l
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~~
2 f! x  b6 b5 Q$ D3 k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, m8 E9 v" D5 R4 N8 J
globals[, P: @+ N2 u! |# E
xmax
8 _. P& N5 l8 I: Zymax
0 }  T: o) B+ `global-reputation-list4 V; k7 Q* B" G" ]$ c
; j6 h$ a: f: t9 s  o
;;
每一个turtle的全局声誉都存在此LIST1 p$ D- }, z4 K) x" k( C5 D3 T
credibility-list$ o5 d& _' U! f7 [) F. ~
;;
每一个turtle的评价可信度" v! j% N/ N5 e5 t; R+ I& O& G
honest-service4 n( N9 s* T. C% o
unhonest-service: s& N, ?- G- H- H& A
oscillation
$ c/ J2 U+ ^8 T' q: ?rand-dynamic9 c# F: [5 [$ G
]
( n; s% {( X: {
) W7 b# ^- Y% h- B. O$ r* ?" Bturtles-own[( V1 H* q+ i! v5 Z% T
trade-record-all) S' v4 {4 p% P3 s1 M
;;a list of lists,
trade-record-one组成7 l) L% o: n$ K8 P1 [# d+ \4 b/ O* X1 t
trade-record-one, q8 S1 G& `/ J' L4 h
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 R* C$ D; B$ j8 I( s
- _, Q3 M5 B/ \: e) X- C;;[
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]]4 l% ~' [/ Y( u
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]2 h1 w/ K% n) x0 N4 k
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$ f; ~) A3 I3 V- ?! x4 a3 f- t
neighbor-total
* x4 w- Q& s0 s% l$ [  }' R6 `;;
记录该turtle的邻居节点的数目
) L- b$ x" g2 {trade-time4 N( F, c7 v. Y* [2 ~& U  K
;;
当前发生交易的turtle的交易时间; J% r8 V7 z) S
appraise-give
# E. [* L* m5 e1 P( i$ s;;
当前发生交易时给出的评价( e- m- p3 @5 W' e8 s- K
appraise-receive, A& A# w% S) \) P: Z" Q' r
;;
当前发生交易时收到的评价
1 K" W& B% k( cappraise-time
+ V% c  h9 X( o6 O' q;;
当前发生交易时的评价时间
7 Q# e4 Z' ?- p; l1 }3 nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉) g* x/ b7 z/ J! V
trade-times-total
6 y7 E. {& H6 X1 }# f/ g) s* W# Z- ?0 j;;
与当前turtle的交易总次数
0 L1 K. W9 U) n. t6 F8 Vtrade-money-total4 U" h$ s: `+ ^3 S2 J& c
;;
与当前turtle的交易总金额* i0 Z7 N$ x& l) E9 Q; ~
local-reputation( u- X  R2 D& E
global-reputation& l, S! b) P1 m1 F# m
credibility
( l3 q6 d& k# }3 k. v: d+ O7 m2 _;;
评价可信度,每次交易后都需要更新* T; J- P3 U6 W; S4 P" M8 ^* {0 o
credibility-all9 o, j0 g, L, d% D- b9 I
;;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 U. m9 H( J5 J. k, M
5 n' }3 S  K/ D. G4 Z% H& ?
;;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' U$ K. E" q0 L" h  T& v7 a
credibility-one7 }, b, V' {- ~5 o
;;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
6 S9 o  {$ e* Y7 M) Yglobal-proportion
  f2 L% ~. i1 y) G, \& D9 Acustomer
$ v' ~3 z) ~, u. z' ocustomer-no
9 S! m2 v! b/ k" btrust-ok
) Z6 L, S0 \5 P/ A; Ptrade-record-one-len;;trade-record-one的长度
1 W! E& `; k8 k& V]$ M- R8 l9 W8 }, I6 J

1 j+ ^2 c$ n+ y+ c;;setup procedure
. W: h! M! Z. Q. c8 J/ W9 }" B! ^' C; l" Z0 a0 D  O
to setup
( W9 A) w! A2 P( @- d$ i' V1 c2 t8 I6 H
ca

8 S. S0 n& U- m& e8 l( _9 [% G* k6 Z: j* C, A
initialize-settings

& A# C: U( x" \" |
3 r1 p/ Z7 u6 gcrt people [setup-turtles]

0 T/ D0 E% i# o: X
* E) n6 G7 T4 c$ X1 X, [6 {9 oreset-timer

7 d$ {1 R- ~& b+ N! ~/ L& B, u& E# E* |
poll-class

+ i' ~- U7 D7 [, `: S$ P5 ~3 C+ W5 @( q8 [0 N8 P/ \
setup-plots
3 k+ `/ \0 r( T( Y2 Z& R

! ?0 J! ?% X! S! H$ Zdo-plots
) q6 D$ ?: I% s+ F$ X5 Z, P
end- Z( \1 K, x9 d5 M- ~% [
6 U& D3 w. P  y: B
to initialize-settings  c% }8 r. m$ v# W3 w+ ]
, E$ M9 c. B! g
set global-reputation-list []
0 {9 q1 j# o+ J  n. l( g

2 H, o' v$ ]3 B1 Zset credibility-list n-values people [0.5]
2 K  p: i/ t, z# ~
: f: E$ i) F0 x7 v4 ~
set honest-service 0
3 @' B" W6 U: C& \; e+ ]
; Y9 g  R8 Y( q3 M; }9 B. o
set unhonest-service 0

- a3 E) U  l3 D$ _) ~* b% O* V  m8 e% C$ P; _0 y# W' S' @
set oscillation 0
0 ~- Q- S8 \# W2 h, N

& _6 d/ t5 Z! T0 o8 q1 Rset rand-dynamic 0

" T- J, G$ F( B+ g; P1 d/ {end' l: e0 ~- Y, a. U. ]3 q7 V
! U. L. ?0 Y7 A/ v% {) ^* ]
to setup-turtles % a/ G. j& M. w# S
set shape "person". ^5 h1 J  d7 F$ V/ X
setxy random-xcor random-ycor6 y! x7 ?8 \5 l. [1 u
set trade-record-one []( c6 k2 D) E  H+ ]- R# K
$ U3 y: i0 S2 h) U
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 q1 P$ _$ ^9 ]1 j

. D$ }3 ], T! qset trade-record-current []
2 `$ n- ~- V* G# k% N* C9 R2 fset credibility-receive []
0 V2 ^5 I: v8 I! S) ~6 \+ Lset local-reputation 0.5
1 A3 i% Y6 x( cset neighbor-total 08 U+ E# ]5 m0 }% ^9 E" T
set trade-times-total 0
3 e) ^# J+ C9 {& x# g! z) Fset trade-money-total 0
# u8 j( P5 f+ h  I( K2 S* Mset customer nobody  o- E0 P% a  s- [4 D( ^* a
set credibility-all n-values people [creat-credibility]* \& T9 [$ ~$ G7 z8 E7 a
set credibility n-values people [-1]* V: T' D( W4 J) U
get-color* [4 ?+ u, J2 F9 D5 [' }9 ^8 b+ {

; D. ^* e- d  d9 J: U" Dend
5 ~$ ~$ Y, f; l6 B
5 Q' }+ `' e! M' C% m0 @to-report creat-credibility( v3 D! S# k; t; h' G- K5 I7 M6 v
report n-values people [0.5]
, O3 Q, b$ V6 N( Kend
- J' E2 q9 c. \# u/ |$ R) |5 f( K! S" S8 Q/ M
to setup-plots8 f  W/ f; L# s; R3 \) V
+ Q, p3 M' ~& M7 s" v' b
set xmax 30
  f# ~. j; r4 e" R

4 z, P5 r% v% H2 [1 l! @2 y/ xset ymax 1.0
( w2 l2 O. ^, D' P: b) Z

9 L! O: p  _1 E0 J! `9 q! w) Iclear-all-plots
9 }9 n+ z/ U5 _+ M7 e
5 @$ C7 _5 _) [+ m8 b. I
setup-plot1
: I' ?3 Y1 f% {  s! _

, H2 f. v. a3 p# Qsetup-plot2
1 g: @/ n8 J: x2 y9 V" i* {" x" J

) A- }. V/ M2 R9 \8 i6 Bsetup-plot3
. u$ a+ E7 w; m6 S
end
. T" m2 i+ y) k3 e7 h. ?* a# W5 l6 r" L" C, r1 f4 Y4 p
;;run time procedures
- z0 {! D. m- P$ j9 i5 g( e- H2 u  q
to go+ H* ]- @* C* O$ [

+ D3 p  p1 {+ h6 S% {6 kask turtles [do-business]

" c% L. V! e5 H- a1 X) P2 oend) ~) W& K  i$ a: ~" t

" s9 }; r: T2 U: }$ h5 hto do-business 8 m1 Y  P6 F2 c% `+ c

  L3 I4 y3 L( z! l, C6 w
; ~- l$ s3 I# K* _rt random 360
. k4 a* h) _, d( G6 t# U( ?# }
$ h& d# ^/ [' d2 A: A' e2 j
fd 1
" Z  o0 @, a, @' v' P

3 Q8 m5 f8 x. K1 rifelse(other turtles-here != nobody)[
4 T7 w* k5 {/ Y% _+ z4 R
6 C& Y, J% r( r1 z+ r
set customer one-of other turtles-here
5 q( E4 Q3 W, v  u

% l; n% E4 ?) F2 n, S& l;; set [customer] of customer myself

. Q* E  b) |; }) z+ z& T- _3 m" d9 A. P3 {. V
set [trade-record-one] of self item (([who] of customer) - 1)
* Q! N  A! z1 U[trade-record-all]of self
; ?" t4 D- }+ k0 U' O4 a! N* C9 G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 N) {1 A7 d3 d; `
" \  n0 n' {( S7 E7 S
set [trade-record-one] of customer item (([who] of self) - 1)7 A; w- C* _2 A1 j
[trade-record-all]of customer
' b+ p2 g+ [1 R. l* i$ e

! N! |& E* Y. _. X+ i" Y. L0 @set [trade-record-one-len] of self length [trade-record-one] of self

  V4 C' E+ x: k3 d! e, ~( ]" w2 \
set trade-record-current( list (timer) (random money-upper-limit))

* ^$ L6 b& t* Y  F  Q! P! O
% ]9 R) V; X8 Z+ r$ Vask self [do-trust]
: D; G5 V( v" H: N, S; I% ?5 R- \& E;;
先求ij的信任度
$ r! L! R+ P# K' x+ ?  p  g+ C  G
if ([trust-ok] of self)
; e  F1 p1 `1 H1 t6 n;;
根据ij的信任度来决定是否与j进行交易[
5 w/ j4 C1 M! i- bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& [4 u! ?4 i' U
/ B; u8 }* ~/ m6 \: p; [& p4 q
[

5 a0 L2 d1 \/ L% y* ^$ S: B. ~1 r3 l4 W: d. g
do-trade
/ [. _; n" O' ?! c5 r; |) |

. T  c, w- l# q# u: \update-credibility-ijl
6 w3 L3 Q1 s+ `2 v% p) V

& }4 m3 V, Z! P8 [0 B& Lupdate-credibility-list# r1 l, v4 Y7 c  s( I. I2 x7 [
  m) w" ~" f7 Q2 ~: C4 c) R6 J

6 t" e4 l( L6 o& T6 g9 K1 o) ]$ yupdate-global-reputation-list
+ |$ C( w3 `" i" M- N
* c7 h$ s! N- ~+ L  ]% E$ W8 G
poll-class

! }4 e7 N4 e  k3 B4 a2 v. E& ~2 J- h. [0 ?- N
get-color
+ }. `) P1 ?' k: n2 Q
& m# h, N" ]) C  P/ L
]]5 n7 s  B: u! l/ Y: G9 _( P
! b+ Q. ]7 c5 u% O- o1 J4 ?/ q& F
;;
如果所得的信任度满足条件,则进行交易
. S0 ?. K  O$ x7 o5 g
0 S( p2 D5 {) w6 O$ K! B[
% t5 y& z( H$ k$ w! e

5 }' O) b! _# ^; drt random 360

" Z9 T. I2 t$ w% B! W2 C& D7 I9 S) P
fd 1

6 W; Y" d+ p; o7 \. [) k% t
# Z+ w. P% ]6 J+ ~& @]

5 k3 X4 L4 E0 S- g5 H6 j0 ~$ q: r3 Z- t! Y$ E5 a$ h; q
end
3 s. b4 S# }& G7 ~# N

$ D4 [4 |. n, c/ `3 [3 c: pto do-trust % P: x% q0 e% d
set trust-ok False. g* r$ u9 I! G$ g: g
( S* `1 E, `: K1 _( Z' p- J8 G
8 ]3 `% e; l% L$ ^; t. G1 H. R- R
let max-trade-times 0
6 A) R  t9 C6 {- t  `1 t3 x4 _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! i# \! K8 k- v1 r: f$ t; X
let max-trade-money 00 c$ I# x9 }" f( {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 `# X- O+ S. n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) N- d  W4 Z8 L) M* {, V5 V8 A* |3 E) h, @* x0 i

; ]& l: P) Y1 C3 Bget-global-proportion
, o9 b1 b  Q6 G& i' n9 clet trust-value9 l+ H( U$ k7 t7 R! N% z' r: R
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)

0 y* d# N; J& mif(trust-value > trade-trust-value)
' [( ~* p: B* e( N1 p4 ?7 v[set trust-ok true]' b8 m+ _# `8 d: l) @6 P! L; F8 b
end
5 B; b% y- s2 U  [) U+ q; Q1 ^2 H
/ x# ?1 e4 c. C1 Zto get-global-proportion
) \6 C( ]! E& ~- Eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), }- u# t. N$ b& {, {
[set global-proportion 0]
/ S8 v6 m; x8 O  r[let i 0- I! a) k. \" k4 ]0 R+ j( Q
let sum-money 0; k# @: I# c, c  {1 P2 K' @
while[ i < people]. R" L7 O# `3 i4 x! ^
[
4 y7 V& z  L0 h+ V; O+ kif( length (item i5 p9 X  ~" t2 B% I3 N; R
[trade-record-all] of customer) > 3 )
  q, i) @0 o- H$ t  Y
[
0 M2 i! K/ W. \' ~7 y0 kset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). i& c! ~) [0 t" }5 D+ x3 _
]6 t+ X3 b! q- q9 y
], T  V2 e7 L5 O
let j 0
0 ^6 ~0 m& }) B0 X( |let note 0. p1 \! Y1 h& v/ C, Y* C
while[ j < people]! n, n6 \  e. B5 t4 k/ r
[
* S9 j* M" X' B2 E* f% bif( length (item i
7 O8 v- E2 M8 E' |[trade-record-all] of customer) > 3 )
: V3 c+ I) i' @4 q1 J- Y
[  g  @$ T8 ^/ D: E; x5 \
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  ]5 e3 v! ^2 \9 F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. C% B. y: v3 ]% k( \! @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: [- R) |8 I- T& m, U3 Y2 s
]* b$ l% [2 Q* u/ A2 _0 q$ q1 G
]
8 g8 d0 q4 J1 ~4 J" sset global-proportion note
, k; S% Q- x2 D: ~) Y" `1 t]8 Y* ]/ s+ f( q1 e5 m$ L2 n
end* v7 |+ F- x5 ]$ r& S9 q6 s2 g

6 Y; {, v% {9 H# R1 o  }to do-trade) `# r/ ^. z+ c4 |, i& a
;;
这个过程实际上是给双方作出评价的过程
; o$ F2 A# d  a) K3 H0 o  Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( y4 J/ L' _9 e$ f+ s) Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 b7 S' l1 @- T2 sset trade-record-current lput(timer) trade-record-current
) l' _# O7 X$ Y; R: f! z;;
评价时间4 Z, ]  X" F5 [' P
ask myself [. a2 U9 o. ~2 E( {( b: v9 ?
update-local-reputation0 ]( d+ u! `- [* y; M/ i) n# ?
set trade-record-current lput([local-reputation] of myself) trade-record-current
- [" Q" A/ n+ E  _4 W3 j1 x) z: j]2 u  h1 x, d3 j" }& Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 u  y6 U& j1 k
;;
将此次交易的记录加入到trade-record-one
/ ?) F! o: k. J# T* H1 Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 Y! D' ]7 V6 |
let note (item 2 trade-record-current )) Q* X5 c' L; y3 \9 V4 Q
set trade-record-current
$ b, n+ b6 B& C; d: J  {! k(replace-item 2 trade-record-current (item 3 trade-record-current))

; ]; D9 v; C6 a4 Jset trade-record-current
$ x9 _% g. v( e# w(replace-item 3 trade-record-current note)- x4 n- o9 k2 \' a' W& E# O1 f" q! a
) m3 h" n* m' O( |7 K/ M+ c0 l% J& R

" y% ^- v! d3 Eask customer [3 B. r8 [' }/ {6 X% g! u
update-local-reputation
1 H% U: N1 C1 Q8 Vset trade-record-current. }7 K2 P5 b2 f$ H, \: o- n5 J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) k( R9 w  b, v1 Y/ D; r) `
]; T- q$ A9 Z9 i

" t3 c5 E# r/ v: v* T1 u$ E2 t2 V

$ j4 D# B, g3 \* ?3 z  cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 G+ ^% j: r6 b6 |0 \
& r7 V; v# ^5 m9 V* q) d' R
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 D% E8 R" I7 Y;;
将此次交易的记录加入到customertrade-record-all
; D0 |, O1 `( a# g9 Aend  l% a1 ^" Z$ x6 G( H

6 |% \* i, ~2 P" _& M3 Wto update-local-reputation: D6 Q( U; K0 V8 e% n6 e7 |
set [trade-record-one-len] of myself length [trade-record-one] of myself6 J9 }& M1 f9 k. ?. }; Q! \, b

  M: `/ i0 I; I5 \0 d5 H1 w
+ g7 Q& g/ Q3 k2 K;;if [trade-record-one-len] of myself > 3
" `1 N( m3 w. Z6 z; R, e
update-neighbor-total
8 D5 B5 B  q; H" m& l2 }' N;;
更新邻居节点的数目,在此进行/ p$ @4 i% A1 ]) z
let i 3: G6 ^+ Z% D$ F4 w. x+ Y7 c$ e
let sum-time 0
5 V" ?, }& r6 V/ T; fwhile[i < [trade-record-one-len] of myself]% p- T' r  k# r4 B
[7 ~+ P- i$ f1 U) @3 p) I+ |7 k
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 {4 y6 ?7 G" F, o- N- R' h% r
set i' f$ q' L. t* @/ L
( i + 1)
. ?& `0 M$ I& W) o6 m
]
8 O) ?* M; A6 H) Glet j 3
* k8 e6 |% q0 P- D0 T, r( K" Elet sum-money 04 j: S9 f/ y4 U# J
while[j < [trade-record-one-len] of myself]
1 k0 q, \# I/ y2 E: ?, Z[9 c) `, r. k  l0 s1 E: V
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)
8 P7 {1 `' Z: S; {set j" H# Y% {1 U" K! m7 ]
( j + 1)

. h, H: M7 w/ r7 K2 W7 J]
0 f/ i. o0 ~# T2 G) Y. xlet k 3" H' A( d: o& f1 q& j7 q
let power 0
+ _$ O* k& v& }7 F! Wlet local 0
; ~3 b) @3 n! e  t5 Mwhile [k <[trade-record-one-len] of myself]# I( w7 j4 k5 l
[
: u) S* x: W9 y/ w+ Bset 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) ! i9 Y0 P, B& C! Z5 @
set k (k + 1)9 {5 G$ L' R% }0 e
]( a3 E% W; E  Y% e
set [local-reputation] of myself (local)
1 i' h" Y7 Q  }! u  b% a: J2 Kend
, ^0 }; ~5 o# X9 h7 [8 n. I
! I! N" q2 f7 Pto update-neighbor-total
5 o. W3 O$ w* x+ j$ Z7 ~6 r; r' P% L8 G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: Q0 r* r% m8 ~* k
! \9 V. ?( i8 y& V
" ^1 e# J. [* ^4 T- \  d  s6 [+ b
end( D$ y) V8 Z7 [2 o
) ]) C9 ]# R' o  X4 _6 p
to update-credibility-ijl
% N, g4 _/ ~; e! j+ r& W  H) g* C) o2 M. D+ \# y. z
;;
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。# S0 O5 V4 x2 W. g9 w
let l 0
. [  k* c, p- X/ n' awhile[ l < people ]1 m. A9 K: o, j
;;
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
7 {  M3 H; @/ C! O* @/ j[. P% d6 E* {6 U/ j$ \" x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 @0 `2 Y4 b2 ^1 t2 l  o. i
if (trade-record-one-j-l-len > 3)  A- {* `# j4 h, \8 P
[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
; k/ D, r0 X+ a+ Zlet i 3
' d2 [$ J% V1 W% k3 d) F  j) Glet sum-time 0
. X7 `; ^! w; i, n  {; k0 U3 H$ u4 u+ a/ zwhile[i < trade-record-one-len]
8 o/ C- V% u9 E  z[/ y2 H* y' Y- q9 W3 K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) K/ w- M/ ^4 L: l& @* zset i& Y  I# j- _5 A( Q
( i + 1)

9 R" D) x+ s. l) g8 x]/ K% p- }/ J5 p8 S' G! t
let credibility-i-j-l 0
, B% A  d! m# v' y;;i
评价(jjl的评价)
" {- t4 S; Z2 {* jlet j 3: U4 {% w( P" b% Z8 Z: A
let k 48 [$ J8 Q; m4 M  f
while[j < trade-record-one-len]. q9 l. P9 f" V% h
[/ ?/ M1 i* `! T" f0 x
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
; R, u$ `' @: Z/ ~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)+ ~! M$ L+ V5 m. a% W& P
set j& q. r: f! Q' d# s4 b
( j + 1)
" {& A0 y; d- t3 W  B
]
( {6 o( A) J, K7 X2 Vset [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 ))' l2 M+ \& o# {. W/ ^6 `
# z  H( E) v9 g3 d8 R

2 n2 `! S9 E2 v  N. O$ i2 mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 @' h4 i+ P  d
;;
及时更新il的评价质量的评价, R) o; }/ e. e! S7 y" I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( M; O) ^" o8 V/ u( ?+ W+ _- Z
set l (l + 1)
8 N" h' H% j8 r0 R]
# \0 e6 ~( \. O* _& F4 Send
( T5 h! y0 V3 t6 C  y
8 }( Y! r! ?, k) y0 R& wto update-credibility-list
; S: u9 |3 z/ `( R. `: x" alet i 0
/ o5 y2 Z# ~! f, g6 |while[i < people]
0 M/ M1 `" x$ X# ?$ `4 l[
  d( \8 O* D0 U. Vlet j 0
6 n% q; ]/ d5 s: blet note 0
" }7 L7 g$ N* c' H: clet k 0% {" d2 o' L2 E
;;
计作出过评价的邻居节点的数目$ I4 i7 m" r& O( \  m
while[j < people]
$ R+ \5 `# z/ x/ }& D* l[7 f# g' n0 t9 W. M9 [" P7 D# N- S* d
if (item j( [credibility] of turtle (i + 1)) != -1)- ^# K$ @4 c9 H3 {% D; R
;;
判断是否给本turtle的评价质量做出过评价的节点2 K, m. F& I5 S) O% A; X" }) r, V: I
[set note (note + item j ([credibility]of turtle (i + 1)))
4 [! j& p2 x7 W9 R7 L  k;;*(exp (-(people - 2)))/(people - 2))]

% @" @& }; |4 B7 {5 i% x, Cset k (k + 1)+ ]% x2 f( z- d7 }0 k4 s; b
]" j' q: J) W  G# o
set j (j + 1)2 F: U7 x5 t  y/ g
]
: u. k% K8 q5 k2 Xset note (note *(exp (- (1 / k)))/ k)# {3 e; v0 a% I" k0 v* z8 @
set credibility-list (replace-item i credibility-list note)
6 f0 a4 v% j" g+ wset i (i + 1)/ g* w, h1 r; Q+ j& d2 Q/ L
]7 b4 t8 \0 F* ?1 f8 [. F+ f
end
7 M. \4 ?+ J. E' X
; O( o1 \# z! C: r4 R! tto update-global-reputation-list1 P7 J) `; I5 E6 J" l' R7 o! B
let j 0
3 F' K9 I1 R" }; P: W; \; ewhile[j < people]. P: t' x# S9 `" e% H0 T. I
[
# E! v2 @9 g' I9 Alet new 0
& p4 _3 D) y2 n% O, y;;
暂存新的一个全局声誉
( @1 Y1 w- U+ B4 ~, S3 b- u8 e: H( k/ wlet i 0* d# [( t! t9 i* g/ ?. k( T2 E* n! n
let sum-money 0
+ \2 E5 Y6 |7 {let credibility-money 0% K3 ^* l3 _% c+ Q! m* W! B
while [i < people]) D9 k3 F: }' K- E, S
[3 I5 l4 h1 q: ^; _; Q% @  }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 |% |2 l  a. u) z* |' M+ I* n8 _7 v, W' U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& @% f' I/ [( p8 dset i (i + 1)/ ~2 Y* l( R! `& Y
]
& o& ?2 K: `8 v4 clet k 0  z: g; O( S* c) u3 B" O
let new1 0
8 S% R" w( p3 Kwhile [k < people]6 K; O* w) S) }
[2 J% @8 b% g/ c
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)# m% U0 ^6 M6 Q: G
set k (k + 1)
. t; O2 _' @7 M]5 a6 Y3 a- N& |2 E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & G: f/ _  Q9 @4 e- ^
set global-reputation-list (replace-item j global-reputation-list new)
' K: U* U7 f3 [1 z: O$ g4 Rset j (j + 1)
, ~! U7 Y; z8 o! a]! j6 G- c/ L7 i# a
end- J( C; p& w& ]" h" Q' y$ Q
0 M2 z$ W2 n; X3 m0 `7 I
, C$ k3 i# r4 O+ K
  r" m) S' E( t3 h( f
to get-color
6 S4 h  |. K; h% k" k4 D: o+ E
% y6 ]/ N* q  D4 ?7 |set color blue

  c/ P/ a2 {* gend
: [+ b" ]& C/ ~3 s) @; u" Y( W: `7 a+ _0 i/ |7 Q# N/ c) `* P2 r
to poll-class7 J; Q) }& l) m/ o, w! B' K
end9 v5 i8 X$ \1 \1 v2 S2 r" M! ]
4 a, `9 m2 ?( g6 x6 p( i9 E' i
to setup-plot1
- s8 `+ U, O: g
1 r7 k! s* x& z& H% g+ vset-current-plot "Trends-of-Local-reputation"
. v5 J" v9 w7 [. R' x
/ H% t  s8 P7 S2 b$ K3 h0 [
set-plot-x-range 0 xmax

( T, X1 Y" l) s
$ m8 b- Y' l2 Z! A* sset-plot-y-range 0.0 ymax

" ^9 q6 z: ~4 P0 d( e* t% _end
+ j+ _% h- d9 B* z
/ N1 i* q& [, b' D" s9 `! i$ d% cto setup-plot2' Y3 w/ }5 x* _  g' N' i
/ \% L2 k$ w& i. X0 e2 K+ ~/ a8 h
set-current-plot "Trends-of-global-reputation"

; G  x( ~8 D; C0 @: p! [! f- [" i. e! U% i
set-plot-x-range 0 xmax
" j* w  I$ Z" V& }3 W, [/ g
5 M/ V4 G' g. ^7 v+ f) R
set-plot-y-range 0.0 ymax
0 Z  s- T$ j0 O. l+ W- v: V
end
$ @$ ?+ n9 p' b4 V8 k3 O4 i2 o/ k4 O4 [) o% U$ V  V
to setup-plot3: b. z) Q$ K/ U7 M' ~9 p  r6 [
" }( o  M7 U! `# P: W: t( b% n
set-current-plot "Trends-of-credibility"

! v, }! O$ B. \9 t, l
; N! E! d- [0 Q& B  a, Sset-plot-x-range 0 xmax
$ |* ^' Y# d2 i1 q% T/ l  }" E! L' F
4 L, K( Q& [" G% l1 N
set-plot-y-range 0.0 ymax
5 |+ l: O5 w- \* P
end
! Q$ Y* p! n3 [+ ~% x5 I3 Z; M& {- n0 k6 a3 _5 x, E1 V3 Z5 I- f
to do-plots% {( M) M8 }" p) v4 R: F
set-current-plot "Trends-of-Local-reputation"2 s2 e  z( Y0 U) K4 \7 E
set-current-plot-pen "Honest service"; @6 ^, l7 R( ^/ V4 D
end  c. N2 O& ^, F% R7 p0 |3 r
& g' k8 x" [8 s& k7 [* l
[ 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.
5 \; n- ]+ ~% b) B
4 Y1 Y" G; B4 e+ p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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